Fire-Maker: How Humans Were Designed to Harness Fire & Transform Our Planet

Discovery Science
7 Sept 201621:44

Summary

TLDRThis script explores the pivotal role of fire in human evolution and technological advancement. It highlights the San people of the Kalahari, who have harnessed fire for millennia, symbolizing humanity's mastery over this element. The video underscores how fire enabled cooking, metallurgy, and various technologies, shaping our modern world. It also discusses the unique conditions on Earth that allowed for fire's utilization, including our planet's size, atmospheric composition, and the presence of specific fuels. The script suggests that the human body's design, with its manual dexterity and strength, is uniquely suited for fire-making, and it ponders whether the availability of key materials for technology is coincidental or part of a larger design, hinting at a deeper mystery behind our technological success.

Takeaways

  • 🔥 The mastery of fire was a pivotal moment in human history, enabling the development of technologies that underpin modern life.
  • 🌍 Earth is the only known planet with the precise conditions necessary for fire to exist and be harnessed by a biological entity.
  • 🌬️ An atmosphere that supports both respiration and combustion is crucial for fire to be utilized, a condition only planets of Earth's size can meet.
  • 🌳 The presence of lignin, a molecule that strengthens plant cell walls, allowed for the growth of large woody plants and the creation of fuels like coal and charcoal.
  • 🔩 Metallurgy, the process of working with metals, was made possible by fire, leading to the creation of tools, weapons, and the foundation of modern technology.
  • 🧠 The human brain's large size and need for calories were supported by the ability to cook food with fire, which made digestion easier and more efficient.
  • 🤲 Human anatomy, with long arms and dexterous hands, is uniquely suited to making and controlling fire, a capability not found in other species.
  • 💪 The strength of human muscles and the speed of nerve conduction are finely tuned to allow for the manipulation and use of fire.
  • 🌱 The existence of key materials like iron and copper in the Earth's crust, and their special properties, have been essential for technological advancements.
  • 🌟 The availability and properties of natural materials on Earth seem to align with the needs of human technological development, suggesting a deeper, perhaps guided, order in nature.

Q & A

  • What is the significance of fire in human history according to the script?

    -Fire is one of the greatest turning points in human history, enabling the development of technologies on which modern lives depend. It allowed for cooking, which made food easier to digest and provided necessary calories, and it led to the creation of ceramics, glass, and metallurgy, which in turn led to numerous inventions and innovations.

  • Why are the San people of the Kalahari mentioned in the script?

    -The San people of the Kalahari are mentioned as an ancient race that has lived in southern Africa for thousands of years and has made use of fire, showcasing the human capacity to harness fire from early times.

  • What conditions are necessary for a planet to support fire and combustion according to the script?

    -A planet must have the right kind of atmosphere that supports both biological respiration and combustion, and it needs to be of the right size to retain an oxygen-rich atmosphere without retaining primordial hydrogen and helium.

  • Why is the size of a planet important for supporting fire as mentioned in the script?

    -A planet needs to be of a size similar to Earth to retain an oxygen-rich atmosphere necessary for both respiration and combustion. Larger planets retain light gases like hydrogen due to their strong gravitational pull, and smaller planets cannot maintain free oxygen as their gravitational pull is too weak.

  • What role does lignin play in the context of fire and technology as discussed in the script?

    -Lignin strengthens cell walls in plants, allowing them to grow taller and slowing the breakdown of organic matter in the soil, which supports large trees. It also facilitated the creation of vast coal deposits by preventing the breakdown of organic matter until it could be fossilized.

  • What are the physical requirements for a living being to make and use fire as described in the script?

    -A living being must have a body of the right size and design, capable of handling and manipulating fire. It needs to be a terrestrial organism with the strength and dexterity to gather fuel and create a fire hot enough to smelt metals.

  • How does the script suggest that the human body is uniquely suited for making fire?

    -The script suggests that humans are uniquely suited for making fire due to our body design, which includes being tall enough to handle fire without burning, having long arms for manipulating fire, and hands capable of creating fire through friction.

  • What is the significance of the availability of key metals like iron and copper on Earth as per the script?

    -The availability of key metals like iron and copper is significant because they form the basis for modern technology. The script suggests that their existence and usefulness to humans might not be a mere coincidence but could be part of a larger design that allows for technological development.

  • How does the script relate the properties of natural materials to the advancement of science?

    -The script relates the properties of natural materials, such as the ability to produce clear glass, to the advancement of science by highlighting how these properties have enabled scientific discoveries and technological advancements, such as the development of microscopes, telescopes, and spectroscopes.

  • What does the script suggest about the role of natural conditions and properties of matter in human technological success?

    -The script suggests that human technological success is not solely due to human genius but also the result of finely tuned conditions and properties of matter that make technological advances possible, indicating a complex interplay between nature and human innovation.

Outlines

00:00

🔥 The Significance of Fire in Human History

This paragraph introduces the concept of a world without fire and the technologies it has enabled, such as cooking, ceramics, glassware, metallurgy, and various inventions. It emphasizes the mastery of fire as a pivotal moment in human history, predating recorded history and being integral to our modern existence. The San people of the Kalahari are highlighted as an ancient race that has harnessed fire for thousands of years, symbolizing the human capacity to control this element and its role in our advancement.

05:02

🌍 The Unique Conditions for Fire on Earth

The paragraph discusses the precise conditions required for fire to exist and be harnessed on a planet, using Earth as an example. It explains the necessity of an atmosphere that supports both respiration and combustion, which is only possible on a planet of the right size like Earth. Larger planets retain primordial gases like hydrogen and helium, while smaller ones cannot maintain oxygen. The paragraph also touches on the need for the right kind of fuel, such as coal or charcoal, which depends on the presence of lignin in plants, allowing for the growth of large woody plants and the creation of coal deposits.

10:05

🤲 Human Design and the Mastery of Fire

This section delves into the physical attributes of humans that enable us to create and control fire, such as our size, strength, and dexterity. It contrasts humans with other potential organisms, like dolphins or elephants, that due to their environment or body design, cannot harness fire. The paragraph suggests that only beings with a human-like design are capable of making and using fire, which is a unique capability in the biological world. It also touches on the necessity of having muscles and nerves that are strong and fast enough to perform the complex tasks associated with fire-making.

15:08

🌱 Nature's Preparation for Technological Advancement

The paragraph explores the idea that the natural world, with its abundance of materials like iron and copper, seems to have been prepared to facilitate human technological development. It references Alfred Russel Wallace's views on evolution and the availability of key metals that have been crucial for human progress. The paragraph suggests that the existence of these materials and their properties are not mere accidents but may point to a purposeful design that allows humans to explore, study, and appreciate the complexity of the world.

20:09

🔧 The Ideal Design for Fire-Making

In this final paragraph, the focus is on the observation of the San people making fire in the Kalahari Desert, illustrating the ideal human design for fire-making. It reiterates the unique human capability to harness fire, which has been a catalyst for metallurgy, knowledge, and modern civilization. The paragraph concludes with a reflection on the critical role of fire in human history and the significance of our physical design in achieving this mastery.

Mindmap

Keywords

💡Fire

Fire is a chemical reaction that releases heat and light, essential for human evolution and technological advancement. In the video, fire is highlighted as a pivotal element that predates recorded history and has allowed humans to cook food, create ceramics, glass, and metals, leading to modern technologies. The mastery of fire is depicted as a turning point in human history, shaping our world as we know it.

💡San people

The San people, also known as the Bushmen, are an ancient race living in southern Africa. They are noted for their traditional knowledge and use of fire, showcasing the deep historical connection between humanity and fire. The video uses the San people as an example to illustrate the ancient and ongoing relationship between humans and fire.

💡Metallurgy

Metallurgy is the process of extracting metals from their ores and refining them for use. The video emphasizes the role of fire in the development of metallurgy, which in turn led to the creation of tools, weapons, and the foundation of modern technologies. Metallurgy is presented as a critical outcome of humanity's ability to harness fire.

💡Atmosphere

The atmosphere of a planet is crucial for supporting both life and fire. The video explains that Earth's atmosphere, with its specific composition and pressure, allows for both combustion and respiration. This is contrasted with other planets that either retain primordial atmospheres or cannot maintain oxygen, which is necessary for fire and life as we know it.

💡Planetary size

The size of a planet is highlighted in the video as a key factor in determining its atmosphere and, consequently, its ability to support fire. Earth's size allows it to retain an oxygen-rich atmosphere suitable for both life and fire, unlike larger planets that hold onto lighter gases like hydrogen and helium, or smaller planets that cannot retain oxygen.

💡Lignin

Lignin is a complex organic polymer that strengthens the cell walls of plants, allowing them to grow larger and taller. In the video, lignin is discussed as essential for the formation of coal, which is a significant fuel source for generating high-temperature fires necessary for metallurgy and other technological advancements.

💡Human capacity

The human capacity to harness fire is a central theme of the video. It refers to the unique physical and cognitive abilities of humans that allow us to create, control, and utilize fire for various purposes. The video suggests that these capacities are not just a result of human ingenuity but are also a result of specific biological adaptations and environmental conditions.

💡Technological advancement

Technological advancement in the video is directly linked to humanity's mastery of fire. It encompasses the development of tools, machines, and systems that have transformed human society. The video argues that the ability to harness fire was the initial step in a chain of innovations leading to modern civilization.

💡Natural selection

Natural selection, as proposed by Charles Darwin and Alfred Russel Wallace, is the process by which species evolve through the survival and reproduction of individuals best suited to their environment. The video touches on the idea that the conditions for human technological success, including the mastery of fire, may not be mere accidents but could be part of a larger pattern of evolutionary development.

💡Chemical compounds

Chemical compounds are discussed in the video as the building blocks of materials that have enabled scientific discovery and technological progress. Clear glass, for example, is a chemical compound that has facilitated the development of chemistry, astronomy, and the understanding of life forms through the invention of microscopes, telescopes, and spectroscopes.

💡Conditions of matter

The conditions of matter refer to the physical and chemical properties of elements and compounds that make technological advancements possible. The video suggests that these conditions are finely tuned, allowing for the development of fire-based technologies and hinting at a deeper, perhaps purposeful, order within the universe that supports human progress.

Highlights

The San people of the Kalahari have harnessed fire for thousands of years, showcasing human mastery over this essential element.

Harnessing fire was a pivotal moment in human history, predating recorded history and leading to significant technological advancements.

Fire enabled cooking, which was crucial for the digestion of food and the nourishment of early humans' large brains.

The creation of ceramics through fire led to the production of pottery, pipes, bricks, and tiles.

Glass was created through fire, leading to the invention of glassware, windows, plate glass, mirrors, and eyeglasses.

Metallurgy, made possible by fire, allowed the transformation of raw ores into utensils, weapons, and tools.

The mastery of fire set off a chain of innovations, including the invention of nails, steel, printing presses, steam turbines, and telegraphs.

The development of internal combustion engines, light bulbs, telephones, automobiles, televisions, and computer chips are all linked to our control of fire.

Earth's atmosphere, with the right balance of gases and pressure, is uniquely suited for both respiration and combustion.

Planetary size is critical for an oxygen-rich atmosphere that supports both life and fire; Earth's size is just right for this.

Lignin, a molecule in plants, is essential for the growth of large woody plants and the creation of coal, which is a vital fuel source for fire.

The human body's design, with its size and manual dexterity, is uniquely suited for making and controlling fire.

The strength of human muscles and the speed of nerve conduction are perfectly adapted for the complex tasks involved in making fire.

The availability of key metals like iron and copper in the Earth's crust has been crucial for the development of modern technology.

Alfred Russell Wallace suggested that the Earth and its resources seem to be designed to facilitate human technological development.

The chemical compounds that make clear glass possible have been essential for scientific discovery and the advancement of knowledge.

The conditions for fire-making and technological advancement appear to be finely tuned, suggesting a deeper mystery behind the capabilities of our planet and species.

Transcripts

play00:02

imagine a world without

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airplanes or

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computers or cooked

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food or metal

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tools or

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cars or modern

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medicines or electric

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lights or cell

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phones or any

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phones

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imagine a World Without fire and the

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human capacity to harness

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[Music]

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it

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[Music]

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the San people of the Kalahari are an

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ancient race for many thousands of years

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they have lived in southern Africa and

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for thousands of years they have made

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use of

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fire s are an interesting people because

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they're one of the most ancient peoples

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on Earth uh they're one of the groups of

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humans um which are close to the the the

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sort of root of the human race and

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they're making fire and they're showing

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the way ahead for all Humanity this was

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the route this was the physical being

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this was the the root to

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knowledge the harnessing of Fire by

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humans predates recorded history our use

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of fire is so much a part of human

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culture in fact that most of us probably

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don't give it a second thought but the

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Mastery of fire was one of the greatest

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turning points in human history

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if humans had not learned to harness

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fire the world as we know it wouldn't

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exist it was the Mastery of fire that

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allowed the development of Technologies

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on which our modern lives

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depend fire enabled cooking which made

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it easier for early humans to digest

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food and gain the calories they needed

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to nourish their large

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brains fire enabled Ceramics which led

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to the production of pottery

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pipes bricks and

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tiles fire led to the creation of glass

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which produced glassware Windows plate

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glass mirrors and

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Eyeglasses and fire led to the rise of

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Metallurgy which allowed us to transform

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raw ore containing copper iron and other

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metals into

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utensils weapons and

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tools Metallurgy in turn led to one

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invention after

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another metal

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Nails

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steel printing

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presses steam

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turbines

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telegraphs internal combustion

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engines light

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bulbs

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telephones autom

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s

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televisions computer

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chips in short Humanity's Mastery of

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fire was the initial Domino that

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produced a succession of Innovations

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leading to the world we know

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today but as critical as fire is to the

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world we live in its miraculous Powers

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couldn't have been harnessed just

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anywhere or by just

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anyone in fact there's only one known

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planet in the universe designed to reap

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the benefits of

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fire

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earth and there's only one known animal

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capable of harnessing the power of

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fire

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humans in order for our planet to fully

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realize the lifegiving powers of fire a

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multitude of precise and exacting

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conditions had to be

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met

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first our planet had to have the right

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kind of atmosphere one that permits both

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the existence of fire and the existence

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of a biological creature capable of

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using it you need to have an atmosphere

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that supports both biological

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respiration and

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combustion um and it's not it's it seems

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well all atmospheres would be like that

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but that's not correct you can AR

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there's various types of at atmosphere

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with different proportions of nitrogen

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and oxygen different atmospheric

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pressures in which we could breathe and

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survive okay but you couldn't make a

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fire and there's many many uh

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atmospheres like that so the first thing

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you need is you need an atmosphere which

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uh in which we can breathe and which can

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also support fire that's condition

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number one but to get the right kind of

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atmosphere you also need a planet of

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just the right

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size you need to have a planet about the

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size of the Earth so why why do you need

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a rocky planet like the Earth you need

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that because if the planets much larger

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than the earth retain their primeval

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atmospheres that is they retain hydrogen

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and helium light gases and the

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conditions on large planets are

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incompatible with the sort of atmosphere

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we have only planets of the right size

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can possess an oxygen-rich atmosphere

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which is required if you want to have

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both respiration and combustion

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planets much larger than the earth like

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Jupiter retain light gases like hydrogen

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in their atmospheres by their strong

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gravitational pull and cannot undergo

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planetary and Atmospheric Evolution into

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a rocky planet like the Earth with an

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oxygen-rich

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atmosphere planets much smaller than the

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earth on the other hand can't maintain

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free oxygen for another

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reason a small planet's gravitational

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pull is so weak that oxygen molecules

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will float away into

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space only a planet roughly the size of

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Earth has a gravitational pull strong

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enough to retain an atmosphere like our

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own containing oxygen needed for

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combustion and respiration but weak

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enough so that it won't retain its

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primordial hydrogen our Earth is big

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enough to retain heavy molecules like

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carbon dioxide and oxygen and water

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vapor and things it's got enough pull to

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keep them in but it lets the hydrogen

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helium go you a rocky planet something

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of the size of the Earth to have an

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atmosphere like ours which will support

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respiration and

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combustion in order to harness the most

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important benefits of fire you also need

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the right kind of fuel fuel that can

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generate fires with sufficient heat

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working with iron typically requires

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heat in excess of 2100 de F or 1200°

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Celsius you can't achieve or maintain

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that sort of heat simply by burning

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grass or branches you need coal or

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charcoal or something

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equivalent but the existence of such

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fuels depends on the flourishing of

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large Woody

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plants those plants in turn are made

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possible by a molecule known as

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lignin lignin strengthens cell walls

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allowing plants to grow grow taller and

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it slows the breakdown of organic matter

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in the

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soil providing a soil Rich enough to

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support large

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[Music]

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trees many scientists also believe

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lignin facilitated the creation of vast

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deposits of coal in Earth's history by

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preventing the breakdown of organic

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matter until it could be

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fossilized according to Denton without

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lignan there would be no woody plants no

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wood no no coal no charcoal no fire no

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pottery and certainly no iron and

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probably no other metals or

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Metallurgy but even once you have the

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right kind of fuel that's still not

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enough you also need a living being

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capable of making and using

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fire and to be able to do that the

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living being must have a body of just

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the right size and

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Design

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to get a fire sufficiently um hot to to

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to smell Metals you really need to have

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some big chunks of wood or use charcoal

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or Coke you can't smel the metal by

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burning bits of grass so you've got to

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be able to heue some wood and assemble a

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considerable number of you know blocks

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of wood to get a really hot fire I mean

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you can't imagine an ant handling fire

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because it would burn up long before it

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got to the actual fire we have just the

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sort of basic Android design to do it

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you know we can we're quite tall we've

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got long arms which we can attach sticks

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to so we can manipulate the fire with

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our arms and of course with our hands we

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can actually actually get the fire going

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uh by uh you know the Boy Scout methods

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of uh friction uh and things like this

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so our bodily design enables us to

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handle a fire a large fire significantly

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which generates significant heat uh Heat

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sufficient to smelt uh metals from the

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OES the only biological design of an

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organism that could handle a fire make

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fires and regulat it seems to be a

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biological being of design very similar

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to our own I can't think of any other

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design that would really work I mean

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certain elephant won't work now that

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will a parrot and certainly no aquatic

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organism however intelligent I mean

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dolphins are quite intelligent but even

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if a super intelligent dolphin could

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never make a fire cuz it's living in the

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water and it can't do anything on land

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so you've got to be a terrestrial

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organism of about our size and build to

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make a fire it's is I think that's

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unique I think we're unique chimp would

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have difficulty because they're not as

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manually dextrous as us uh they come

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closest to an organism that might be

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able to make a fire but they don't

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really have the dextrous fingers that we

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have they're not as dextrous as us U but

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in any case a chimp's approaching our

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Android

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design

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if you look at all the organisms on the

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earth I mean there's millions of

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different species of all terrestrial

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organisms only beings of our basic

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design are optimized to do this uh and

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and I think that would apply throughout

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the Universe we are uniquely fit to make

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a

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fire a creature that harnesses fire not

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only needs to be the right size however

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it needs muscles of the right

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strength you need to have muscles

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sufficiently strong to to raise you off

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the ground and that's not a trivial

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problem there's a scaling problem the

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bigger and bigger the organism gets the

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less and less relatively powerful its

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muscles are and so the fact that we can

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stand upright depends on the fact that

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you can have muscles as strong as they

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are um and in fact if we had to stand

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much higher than we are probably with an

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Android form like us would be

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impossible uh so you need muscles of a

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certain strength now it so happens that

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the the sliding filaments which are the

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bases of all biological muscles are

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packed to crystalline density in every

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muscle on Earth they depend on the weak

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chemical forces uh which are involved in

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the sliding process so you can't make

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muscles any stronger than they are if it

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were the case that muscles were three or

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four times less strong we would never

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stand upright on the Planet surface so

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you need muscles of a certain strength

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and it's a close

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call a fir making creature also requires

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nerves that can transmit messages with

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the right

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speed you need fast nerve conduction

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because even walking down the street

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your muscles are Contracting and

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relaxing all the time uh and it's highly

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complex it's uh walking is a very

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complex thing fast movement manipulation

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is a very complex thing you need very

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fast nerve conduction to use the muscles

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to achieve particular ends and certainly

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making a fire is very complicated and

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you need you know don't only you need

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your muscles you need fast nerve

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conduction as well and it so happens

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that nerve conduction speeds are

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commensurate with beings like our self

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functioning as mobile entities on the

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planet surface but again it's a close

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call it's almost certainly the case that

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you couldn't make nerves to transmit the

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impulse any faster it's just about as

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fast as you can get it it's and it

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that's another close

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call but it's not enough to merely have

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fast nerve conduction a creature who

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hopes to utilize fire needs to have

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nerves that are the right

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diameter if our nerve fibers were the

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size of some of those in invertebrates

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for example our nerve cords wouldn't fit

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inside our bodies if the radial nerve

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supplying the muscles of the arm had to

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be many times bigger the nerve cords

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would almost be as big as the actual arm

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itself so you not only have you got to

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have nerves that conduct impulses very

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quickly you've got to have nerves which

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in fact occupy only a smallish volume of

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the um of for instance the limbs or it

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would become impossible in the case of

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good Vision which you also need to make

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a fire the optic nerve would be as big

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as the head you could never get the

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optic nerve out so the diameter of nerve

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axons the speed of nerve conduction and

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the power of muscles is all commensurate

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with a being of our size functioning on

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a planet like the Earth where you can

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make a fire so there's many conditions

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that have to be

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fulfilled we humans seem to have been

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pre-adapted for our use of fire and this

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capability has allowed us to unlock the

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potential of a vast array of materials

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throughout

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nature but therein lies an even deeper

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mystery for the human use of fire to

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result in new technology

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nature had to be seeded beforehand with

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compounds and elements with powers that

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could be unlocked by fire such materials

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don't have to exist but on our planet

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they do and they exist in

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abundance according to Denton it's as if

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the materials of nature themselves were

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prepared beforehand to facilitate our

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technological

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development it's not a new

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thought

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[Music]

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all this life upon our Earth has led up

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to and culminated in that of man Alfred

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Russell

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[Music]

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Wallace Alfred Russell Wallace was

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co-founder with Charles Darwin of the

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modern theory of evolution by natural

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selection unlike Darwin Wallace believed

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that Evolution had been guided to

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produce animals like human beings and to

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produce a world where humans could

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flourish in his book The World of Life

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Wallace wrote about the key metals that

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Supply the basis for modern technology

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like iron and copper all of these are

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widely distributed in the Rocks they are

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also obtained from their ores without

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much difficulty which has led to their

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being utilized from very early times

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each of the metals has very special

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qualities which renders it useful for

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certain purposes and these have so

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entered into our daily life that it is

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difficult to conceive how we should do

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without them without iron and copper an

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effective steam engine could not have

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been constructed our whole vast system

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of Machinery could never have come into

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existence Wallace asked whether it was

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just a fluke that key metals were so

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useful to man and so readily available

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throughout the

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Earth is it a pure accident that these

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Metals with their special physical

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qualities which render them so useful to

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us should have existed on the earth for

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so many millions of years for no

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apparent or possible use but become so

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supremely useful when man appeared and

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began to rise towards

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civilization Wallace didn't think that

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the existence on our planet of materials

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necessary for modern technology was just

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a

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fluke he even argued that science itself

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was dependent on natural capacities

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pre-built into the chemical elements and

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compounds from which our world is

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constructed to take just one example

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Wallace highlighted the critical

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importance to scientific discovery of

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the chemical compounds that make

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possible the production of clear

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glass although most of us probably take

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it for granted clear glass has been

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essential to the development of modern

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science without its use in bottles tubes

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Etc chemistry could hardly exist

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while astronomy could not have advanced

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beyond the stage to which it had been

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brought by cernus and Kepler it rendered

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possible the

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microscope the telescope and the

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spectroscope three instruments without

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which neither The Starry Heavens nor the

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myriads of life forms would have had

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their inner Mysteries laid open to

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us according to Wallace the

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serendipitous features of natural

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materials pointed to a cause Beyond

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physical nature we are brought face to

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face with a body of facts which are

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wholly unintelligible on any other

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Theory than that the earth and the

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universe of which it forms a part was

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constituted as it is in order to supply

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us with the means of exploring and

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studying the inner mechanism of the

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world in which we live of enabling us to

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appreciate its overwhelming complexity

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and thus to form a more adequate

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conception of its author and of its

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ultimate cause and it is possible to

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conceive of that cause as other than an

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all pervading

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mind like Wallace Michael Denton

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believes that Humanity's amazing

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technological success has not been due

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to our own genius alone it's also the

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result of finely tuned conditions and

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properties of matter that make our

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technological advances

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possible so there's a huge number of

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conditions that must be satisfied in

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nature for beings of our biology to

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thrive to be to thrive and live on a

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planet like the Earth and make a

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fire it's a vast chain of coincidences

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in nature and it's each one's a close

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call we have reaped the benefits of the

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technological Revolution enabled by our

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Mastery of

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fire but our potential to make and use

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fire seems to have been built into our

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bodies and into the Earth's biosphere

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from the very

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beginning

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[Music]

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looking at the sand making fire in in

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the Kalahari Desert you can see just by

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looking at it yes you're going to need

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an Android design like us to make a fire

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it's just sort of it's explicit in the

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way they make the fire very beautiful

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actually and you can see looking at them

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that man has the ideal design to make

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the fire and you can you can it's it's

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quite electrifying because you can see

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that in that in that ideal design it's

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opening up the root to

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Metallurgy to knowledge and to Modern

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civilization that was the critical

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moment and the only beings could carry

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out that critical move of beings like

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the sun beings like

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us

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[Music]

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[Music]

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h

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[Music]

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相关标签
Human EvolutionFire MasteryTechnological ProgressAncient PeoplesKalahari SanMetallurgyInnovationNatural ElementsPlanetary ConditionsExistential Questions
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