Internet ha più di 30 anni, ma quasi 3 miliardi di persone non usano il World Wide Web

Summary

The video script discusses the history and current state of the internet, highlighting that as of 2021, nearly 3 billion people, or 37.5% of the global population, have not used the internet. It delves into the creation of ARPANET in the 1960s and the development of the World Wide Web by Tim Berners-Lee. The script also touches on the growth of internet usage, with significant disparities across different regions. It explains the structure of the web,区分 surface, deep, and dark web, and their respective uses and implications, including the potential for both privacy and criminal activity in the dark web.

Takeaways

• 💻 Nearly 3 billion people, or 37.5% of the world population, did not use the internet in 2021.
• 📱 Internet users typically spend an average of seven hours a day on devices like smartphones, tablets, and computers.
• 📈 In Italy, between 20% and 30% of the population did not use the internet in 2020.
• 🚀 The creation of the internet began in the 1950s, driven by the need for a communication system that could survive a nuclear attack.
• 💾 ARPANET, the precursor to the internet, was created by the DARPA in 1958 to connect computers across a continental network.
• 🔗 The Transmission Control Protocol (TCP) was invented in 1974, allowing for efficient data transmission between computers.
• 📄 Tim Berners-Lee is credited with creating the World Wide Web, developing foundational technologies like HTML, HTTP, and web browsers.
• 📚 The first website was published by CERN in 1991, marking the beginning of the public internet era.
• 📊 Global internet user growth has skyrocketed since the 1990s, with disparities in access persisting across regions.
• 🌐 The internet is structured in three layers: the Surface Web, the Deep Web, and the Dark Web, each serving different access and security functions.
• 🚨 The Dark Web, a part of the Deep Web, offers anonymity but is also used for illegal activities, despite law enforcement efforts to regulate it.

Q & A

What percentage of the global population did not use the internet in 2021?

In 2021, almost 3.75 billion people, which is 37.5% of the global population, did not use the internet.

How many hours per day do people on average spend using the internet, smartphones, tablets, and computers?

People who do use the internet spend on average about seven hours per day using these devices.

What was the main motivation behind the creation of ARPANET?

The main motivation behind the creation of ARPANET was to develop a communication system that could not be disabled by a Soviet nuclear attack during the Cold War.

Who is credited with sending the first message between two terminals on ARPANET?

Leonard Kleinrock is credited with sending the first message between two terminals on ARPANET.

What was the first message sent over ARPANET, and what issue occurred during the attempt?

The first message sent over ARPANET was 'login', but the system crashed after the letters 'L' and 'O' were sent. The second attempt was successful.

What is the role of the Transmission Control Protocol (TCP)?

TCP, or Transmission Control Protocol, is a protocol used for communication between computers. It allows data to be divided into packets that are then reassembled into a complete message upon reaching their destination.

Who is recognized as the creator of the World Wide Web?

Tim Berners-Lee is recognized as the creator of the World Wide Web.

When was the first website in history put online by CERN?

The first website in history was put online by CERN on August 6, 1991.

What is the percentage of the population in Bahrain that has access to the internet, according to data from 2020?

According to data from 2020, 99.7% of the population in Bahrain has access to the internet.

How does the time spent online differ between South African and Japanese users?

South African users spend on average 10 hours and 46 minutes online daily, while Japanese users spend less than 4 and a half hours on average.

What are the three layers of the World Wide Web structure?

The three layers of the World Wide Web structure are the Surface Web, the Deep Web, and the Dark Web.

What is the purpose of the Deep Web?

The purpose of the Deep Web is to provide a space where user data can be more secure, requiring credentials like usernames and passwords to access the information.