Webinar: The Skeptic's Guide to Data by Deliveroo Sr PM
Summary
TLDRスクリプトの要点を簡潔にまとめ、ユーザーの興味を引き出す魅力的な概要を提供する。
Takeaways
- 🗣️ データは製品マネージャーが現実世界と製品がどのように相互作用するかを理解するために必要な真実の反映として扱われています。
- 🤔 データは単なるツールであり、適切に使用され、目的に応じて扱われなければなりません。
- 💡 データの能力と限界を理解し、他のツールと組み合わせて使用することが重要です。
- 📈 データはオペラ指揮者のように、オーケストラのさまざまなセクションを統合して豊かな音の景色を作り出す必要があります。
- ❓ データの収集、処理、提示の動機を理解することが、データの最大限の活用と正しい意思決定を確保するための鍵です。
- 🎯 正しいメトリックスを測定しているかどうかを確認し、問題を理解し、影響を測定するために必要なものであることを確認します。
- 🚫 データが常に正しいわけではなく、誤解されることがあるため、常に批判的であり、自分の前提を疑問にすることが大切です。
- 🔍 データの生成方法を理解し、その正確性と信頼性を確認することが、データの品質を向上させるために不可欠です。
- 🤝 ユーザー研究とデータ分析は互いに補完し、製品発見のための聖三一です。
- 🛫 データとユーザー洞察を組み合わせることで、美しくて実用的なものを作成することができます。
- 🥳 データに愛を注ぎ、それを批判的に検証し、理解し、全力で活用することで、素晴らしい製品を作り上げることができます。
Q & A
W Perkinsが話すデータ分析の目的は何ですか?
-W Perkinsは、データ分析が製品マネージャーが現実世界と製品がそれとの相互作用を理解するために必要な、信頼性の高い理解を得るための重要なツールであると述べています。
トニー・ベンの5つの質問とは何ですか?
-トニー・ベンの5つの質問は、「何の力を持っているのですか」「その力はどこから得たのですか」「その力を誰の利益のために使うのですか」「誰に対して責任を負うのですか」「どうやって私たちから取り除くのですか」という連続的な質問です。
データが「嘘をつかない」という考えに対して、W Perkinsはどのような立場を取ていますか?
-W Perkinsは、データが「嘘をつかない」との考えに対して批判的な視点を持ち、データは誤解されることがあるため、製品マネージャーはその情報を扱い的时候就には批判的な考えを持っていることが重要だと述べています。
データの収集、処理、提示の動機を理解するために、W Perkinsはどのようなアプローチを提案していますか?
-W Perkinsは、データの収集、処理、提示の動機を理解するために、データが提示される背景や目的、そしてデータがどのように生成されたかを掘り下げることが重要だと提案しています。
W Perkinsが指摘する、「正しいメトリックス」とは何を意味しますか?
-「正しいメトリックス」とは、製品マネージャーが問題を理解し、影響を測定するために必要な、適切なデータ指標を意味しています。重要なのは、データが実際に必要な情報を正確に反映しているかどうかを確認することです。
データの生成方法を理解することは、なぜ重要ですか?
-データの生成方法を理解することは、データの完全性や信頼性を評価し、データが意図したメッセージを正確に伝えているかどうかを確認するために重要です。また、ユーザーの動機や製品との相互作用を理解することも重要です。
W Perkinsはデータの検証に関してどのようなアドバイスをしていますか?
-W Perkinsは、データの検証においてユーザー洞察を利用することが重要であると述べています。データだけを頼りにせず、ユーザー研究や顧客洞察を組み合わせることで、より正確な理解を得ることができます。
データとユーザー洞察の違いは何ですか?
-データは製品のユーザーとの相互作用を記録し、詳細が豊富な技術的なドローイングに似ていますが、ユーザー洞察はより印象主義的な絵画に似ており、世界に対する鮮やかなイメージを提供します。しかし、データは構造的な表現であり、ユーザー洞察は直接的な測定が困難です。
W Perkinsは製品マネジメントにおいて、どのようにデータを活用することを提案していますか?
-W Perkinsは、製品マネジメントにおいてデータを愛し、批判的に取り扱い、理解し、完全な潜在力を発揮させることを提案しています。また、データとユーザー洞察を組み合わせることで、素晴らしい製品を構築し、製品マネジメントの良いニュースを広めることも重要だと述べています。
W Perkinsが提案するデータ分析の5つの質問は何ですか?
-W Perkinsが提案するデータ分析の5つの質問は、「データセットの収集、処理、提示の動機は何ですか」「私が見るメトリックスは私が気にしているものであり、正しいことを測定しているのですか」「データはどのように生成されており、高い完全性を持っていますか」「どのようにしてそのデータを検証することができますか」「データを使用して意思決定をサポートする人たちをどのように参加させますか」です。
W Perkinsはなぜ、製品マネージャーには批判的な思考が必要だと述べていますか?
-W Perkinsは、製品マネージャーは最終的に意思決定について責任を持つため、情報を扱う的时候就は批判的な思考が必要です。データが誤解されることがあるため、製品マネージャーは決断を下す前に、その情報を厳密に検証する必要があります。
Outlines
🗣️ データの効果的な使用と製品マネージャーの役割
この段落では、スピーカーであるW Perkinsが、データの効果的な使用方法について語ります。特に、製品マネージャーがデータをどのように扱うか、そしてデータが製品との相互作用を理解する上で役立つことについて説明します。また、政治家Tony Bennの5つの質問を引用して、製品マネージャーがデータを使って真実を探るべきだと主張しています。
🤔 データのモチベーションと正しいメトリックスの重要性
この段落では、データが製品マネージャーにとって重要な決定支援ツールである一方で、データがどのように生成されるか、そしてそのモチベーションを理解することがどうやって重要なのかについて説明します。また、データが提示された方法を理解することで、正しいメトリックスを見出すことができ、データの生成方法を理解することで、データの信頼性を高めることができます。
🛡️ データの生成方法と検証の重要性
この段落では、データが人間によって生成されること、そしてデータの完全性と信頼性について議論します。データが製品との相互作用を理解するための重要なツールである一方で、データの生成方法を理解することが、データの信頼性を評価する上で不可欠です。また、データの検証方法についても触れ、データが正しく解釈されるかどうかを確認する重要性について説明します。
🚀 データとユーザー洞察の相補性
最後の段落では、データとユーザー洞察の相補性について語ります。データは詳細で正確な情報が含まれる技術的な図面に例えられ、一方ユーザー洞察は印象派の絵画に似ており、生命あるイメージを提供します。これらの2つを組み合わせることで、美しいだけでなく実用的なものを作成することができます。製品マネージャーはデータとユーザー研究をバランス良く利用し、製品をより良いものにするためのヒントを提供します。
Mindmap
Keywords
💡データ
💡製品マネージャー
💡意思決定
💡データの整合性
💡データの検証
💡ユーザー洞察
💡意思決定の責任
💡データの偏見
💡モチベーション
💡製品設計
💡問題認識
💡製品戦略
Highlights
W Perkins, a product manager at Deliveroo, emphasizes the importance of effectively using data in product management.
Drawing inspiration from Tony Benn's five questions, Perkins suggests adapting the framework for data analysis in product management.
Product managers must understand data's abilities and limitations, using it as one of many tools in their decision-making process.
Perkins highlights the need for skepticism in data interpretation, as data can be misinterpreted or used to lie.
The 'data doesn't lie' adage is critiqued, with Perkins urging product managers to question assumptions and avoid naivety.
Perkins discusses the motivation behind data collection and presentation, using advertising as an example of data manipulation.
The importance of choosing the right metrics is stressed, illustrated with the historical example of the steel helmet in World War I.
Perkins warns against relying solely on data, advocating for a balance between quantitative and qualitative insights.
The concept of data integrity and its impact on decision-making is explored, emphasizing the human element in data creation.
Perkins advises product managers to understand user motivations when gauging the integrity of data sets.
The speaker shares insights on how to monetize user behavior, using Tinder's premium feature as an example.
Validation of data through user research and insights is crucial, as highlighted by Perkins.
Perkins describes the synergy between user research and data analysis, calling them the 'Holy Trinity' of product discovery.
The importance of fostering a community and encouraging aspiring product managers is discussed.
Perkins concludes with a call to love data, but to remain skeptical, validate, and understand data to build great products.
Transcripts
hello ladies and gentlemen product
managers and product enthusiasts all my
name is W Perkins and I'm a product
manager at deliveroo I'm delighted to be
here with you today alas I speak to you
over the airwaves but I hope one day to
meet you in person at a product School
event or something similar I'm truly
humbled to be able to address you today
and steal I hope just 20 minutes of your
time to talk to you a little bit about
how I think about effectively using data
particularly when it comes to you in a
form where you may not necessarily be
familiar with it and is perhaps
presented to you by stakeholders or a
third party so without further Ado let
me take you back to 1970s Britain where
the radical Fringe of leftwing political
thinking was dominated by the labor
Firebrand MP and pipe smoking
afficionado Tony Ben skeptical of those
in power he formulated his famous five
questions to ask those with it in order
to get to the truth about how they
intended to wield that power what power
have you got where did you get it from
in whose interest do you use it to whom
are you accountable and how do we get
rid of
you this he believed would tear away the
veils of obscuration and get down to the
truth of the
matter now as product managers we are
also interested in the truth in order to
make good well-reasoned rational
decisions we need to have a reliable
understanding of what is going on in the
real world and how our products interact
with it an excellent and some might say
the best reflection of that real world
is data but data is merely a tool and
like all tools must be wielded
skillfully and to a purpose we must
understand its abilities and
limitations it's also not a Swiss army
knife to achieve our goals it needs to
be used in conjunction with other tools
in their toolbox so like an operatic
conductor product managers must pull
together the various sections of the
orchestra to create that rich soundscape
and create that picture data may be
playing first violin in our Orchestra
but it needs the support of the others
to really hit those virtuo high
notes so as Tony Ben interrogated
political power to find truth so can we
with our
data why don't we take Ben's five
question framework for divining truth
and create our own that we can use to
make the most out of our data and ensure
we are making the right decisions for
our
product I want to know what motivates
the collection processing and
presentation of a data set I want to
know whether the metrics I'm looking at
are the are actually the ones I care
about and are the right thing to be
measuring I want to know how the data's
been generated is it high or low
integrity and once I'm happy with that I
want to know how I can validate that
data ask whether it's really telling me
what I think it is and finally I must
say I'm not quite as much of a
revolutionary as old Tony so I'll take
his final question and turn it on its
head if somebody's interested in using
data to inform their decision-making
then how do we get them on board as
product
managers now a me sure you often hear is
that the data doesn't lie but think
about that for a minute think about the
data you asking and buy on a daily basis
outside of your
work generally I find it in advertising
either trying to sell you a product or a
political idea perhaps in this context
one could be forgiven for thinking it
does nothing but
lie the data doesn't lie is a nice
sentiment and I get it you know it's
inanimate and human interactions
required before it means anything but
frankly to take this phrase at face
value is a little
naive and the one thing that product
managers cannot be is naive we've got to
be sharp we've got to understand what
we're talking about and so we've got to
be skeptical about any information we're
using to make those decisions because
ultimately we and we alone are
accountable for those decisions no one
else and we certainly cannot blame the
data we're
using data it can be wrong it can be
misinterpreted and yes on occasion it
can be used to lie now please don't see
this as cynical or dismissive of it I
think skepticism is healthy questioning
our assumptions will help us to better
understand what is true and what isn't
it will help us avoid blunder improve
the quality of our decision-making and
ultimately will make us better product
managers so then let's get stuck in with
question
one what is the
motivation let's pick up that thread
again of where we see data in our
day-to-day lives outside the world of
product management if such a thing does
exist we mentioned that people use data
to try and sell us things and often we
won't even notice or recognize that data
is being
used now apparently it's one of those
rules of the internet that um one must
have cats in their presentation now I
don't usually go in these sort of things
but rules is rules so here we
are I don't know if any of you remember
this classic I guess 880s or 90s um
whiskers advert campaign for cat food
eight out of 10 owners who expressed a
preference said their cat preferred
whiskers I know it's a bit of a mouthful
isn't it but um this a has some fairly
compelling data in it so it must be true
and therefore we should all go and buy
this
product well I don't know if you're
anything like me but when I see things
like this I had to go have a bit of a
lie down in a dark room because my my
product manager brain just goes off the
wall with it a little bit you know what
does this mean you asked 10 people and
eight of them said said so or 80% of
10,000 people said it and who were these
people do they often present their cat
with a a selection of dishes for their
supper and then what do they prefer it
to did they prefer it to a a succulent
roast chicken or perhaps going
hungry what about the owners who didn't
Express a preference what do they
think in this case I'm
skeptical this is obviously about
selling as a product and we have no way
of knowing whether it's true or not and
yet and yet there's a bit of me that
still just nods along and says okay next
time the cat's hungry I'll go and buy
the whiskers you know it's effective it
Taps into our psyche somehow and
advertisers wouldn't do it
otherwise we face this type of thing as
product managers in our jobs people will
regularly approach us with ideas for
things they want us to build and a great
way to sell that idea is supporting it
with data which frankly is brilliant far
better than doing without and we should
wholeheartedly encourage
it but it's totally natural for them to
want to make that data as compelling as
possible it's their
job but it's also our job as product
managers to understand why they are
showing us this data and unlike in an
advert we have the opportunity to put
our skepticism into
practice we can question what their
motivations are for presenting their
data through this we can understand why
that data has been presented in the way
it has what is present in it it what is
missing what assumptions have been made
you we could even do another whole video
on this a subsection of 20 questions to
ask when you thinking about the
motivation for things but that's for
another time and and another
place this is also our first opportunity
to understand whether we looking at the
right data and the right metrics both in
order to understand the problem um and
also to measure the impact which lead
provides with quite a nice segue into
question
two are these the right
metrics so join me as we venture further
back in time from the 1970s to
1914 World War I and Europe is a flame
as the major European powers confront
theel confront each other on the fields
of northern France in the decades since
the last major European War military
technology had taken great strides
forwards but the tactics in use will be
recognized by a soldier fighting in
those same Fields a century earlier at
the Battle of watero officers wore white
gloves and ostrich plumes in their hats
whilst leading troops the mounted
cavalry charge was still a common sight
in the
battlefields soldiers of all Nations
went into battle wearing cloth headwear
even the rather satisfyingly named
German pickle halber with its
distinctive brass Spike and Crest on the
front was just made of a rather thin
leather provid little bistic
protection as the machine gun made
surface Warfare impossible trenches were
dug deep into the ground to provide
cover artillery artillery bombardment
then became the modest operandi for all
armies now when artillery shell bursts
it would blow up into the air huge
amounts of Earth rubble and rocks that
would then rain down on those Sheltering
in the
trenches military commanders noticed
that this was resulting a number of
soldiers being taken back to Aid
stations with head injuries increasing
rather
dramatically now British commands in
particular picked up on this as a good
metric to try and address field Marshall
the old hay then will play the role of
our product manager
here he took measures to reduce the
number of head injuries sustained by his
troops by introducing the steel helmet
smartly modeled by the chap pair on the
left um The Mark 1 bro helmet that's
called this is a very good example of
product design it's protective has a
nice rim to Shield the eye to Shield The
Shield the eyes from the Sun and on the
back of the neck from anything falling
behind you it's also got a sort of
rather jawy aesthetic which soldiers of
all of all times rather appreciate
but interestingly and rather alarmingly
once these helmets were introduced the
rate of head digies actually increased
and in and increased dramatically now
why was this one theory was that the
added feeling of safety the helmet
provides led to soldiers acting more
recklessly taking more risks sticking
their head above the parapet where
before they might not
have yes I suppose this is a viable
hypothesis but it's based on an
incomplete understanding of the data set
head injuries per thousand is not the
only metric that is important here the
most important metric particularly for
those actually having to wear the
helmets is the rate of death yes the
head wounds increased but only because
soldiers who would otherwise have been
killed by shrapnel were instead only
sustaining
injuries so here our product manager
found a good metric that got him onto
the target but he needed to go one level
deeper in his understanding to get to
where he actually needed to be
I often think about in terms of um
prospecting for gold you find traces of
the precious metal on the surface and in
streams but one needs to dig deep
underground to find that main gold
them so we think we have our metrics we
want to measure and move well before we
get too excited we need to think about
how reliable this data is and one way to
do that is think about how it's been
generated we must remember that data
doesn't emerge out of The Ether pristin
and Incorruptible like I can think of it
like the body of one of those preserved
Saints in a Venetian church that said
sort of waft the scent of flowers even
after centuries in the Tomb instead we
must recognize that at some point
somewhere somebody has written a bit of
code that creates his data based on a
set of assumptions valid at the time and
to the best of their knowledge available
knowledge which may have since developed
and
changed thinking of this data think of
data in this way I find helpful
it is the work of human hands and and as
such is susceptible to all the failings
of human endeavor continuous iteration
of development can improve the Integrity
of data but it can also result in errors
and misunderstandings getting
institutionalized we should be mindful
of this and if we if we aren't familiar
with the data we should check it
honestly I cannot tell you the number of
times I've been confused by naming
conventions thinking that one metric was
one thing when in fact it was measuring
something complet completely
different now data is gener generally
created by your users's interaction with
a product when someone presses a button
on your app or on your website it findes
an event and then builds up a data set
so again you need to understand the
motivations of your users when they're
engaging with your product in order to
gauge the Integrity of that data
set let's look at two examples web
traffic is Fairly reliable you know when
someone has landed on your web page and
there generally list room for error or
motivation for misuse but even here you
may find a deliberate denial of service
attack on your website can make it look
like your size is extremely popular when
in fact it's a Mali actor trying to
bring it
down and at the other end of the
spectrum a common uh source of data for
uspm comes from customer support now I
think this is generally an invaluable
way of understanding the pain points for
our products but just remember that
often this this data is generated
through the manual tagging of issues by
agents who have to interpret the reasons
for the
contact generally this is fine but
sometimes it can create distortions as
agents try to squeeze issues that aren't
catered For into the existing
categories my top tip here is that if
your most common category is other then
you need to be very very careful with
how you use that
data also if you have anything gamified
in your product you've got to be careful
somebody very well worldly wise once
said to me if you create a game then
players are going to play it and people
play to win even if that means cheating
users will do what they need to do in
order to achieve their
goals I think a great example of this
and I think a truly awesome way of
addressing it is through the dating app
Tinder where one arranges romantic
Liaisons with other like-minded people
in in your their local area now Tinder
saw that people didn't necessarily want
to be restricted to their local area
area they wanted to search far and wide
for their sweetheart and so people began
to mock their location data in order to
check out potential dates in other
areas here users were purpose
purposefully creating Incorrect and
misleading data in order to achieve
their goals now if anyone's ever engaged
with this sort of thing location mocking
is pretty difficult to stop and so
rather than trying to to stop this um
outright I think whoever the PM was at
the time um had a brilliant idea to not
just embrace it but make it a premium
feature giving people the ability who
pay for it um the ability to search
anywhere they want
it it was understanding how the data was
generated recognizing the anomalies in
it and pairing that with a knowledge of
the motivations of the user that they
found a really really Innovative way to
monetize their
product so on our next question then how
can it be
validated
for those non-plan spotters and people
listening on audio we're looking at the
cockpit of a 787 Dreamliner one of the
most advanced aircraft in the world now
it's very very possible to fly This
Plane using the data from purely the
instruments and in fact much of the time
the aircraft can fly itself on nothing
but the
data but not everyone is flying a
Dreamliner most of us product managers
are working startups or scale UPS where
the cockpit perhaps looks something more
akin to
this now one could possibly fly this
just by looking at the dials with a map
and compass on your lap but I think it's
a good idea here to actually take a look
out the window and see what's going on
around you to perhaps push this analogy
One Step Beyond its limit a lot of the
time in product development we don't
even get the the plane to start flying
we have to throw ourselves off the cliff
and build the plane on the way down this
includes conceptualizing and discovering
the metrics that we're going to use
before we even build the instrumentation
to measure them sometimes we have no
idea what we should be measuring and
there are infinite number of things that
we could measure out
there I think it's here that user
research or customer insights or just
your knowledge of the user really comes
into
play where you don't know what you
should be measuring user research can
provide you those insights and tell you
what is important if you find yourself
lacking data it can provide you with a
good read on what you should do
next even if you're flying that
Dreamliner it's a good idea to have a
look at the window every now and again
and just validate the data make sure
it's really telling you what you think
it is so always look out the window ask
yourself how can you validate data with
user insights and on the flip side how
can you quantify user insights with
data now if you're perhaps indulging for
a moment longer on this subject I might
take us a bit further I've spoken a bit
about how data is a reflection of the
real world but this is really sloppy use
of my language because data is not a
reflection it's not a true if reversed
image of the
world it's more of a technical drawing
that can have an incredible amount of
detail but lacks the color and and life
of the real
world counter to this though user
insights is more in the style of an
impressionist painting a mon or says
creating a vivid image of the world but
again it's very difficult to measure
anything on one of these paintings one
wouldn't necessarily want to build a
structure from them but nor any will
want to live in a
schematic the two complement each other
very well because they opposite sides of
the same coin and when you combine them
both you can create a thing that is
beautiful but also
practical I see products user research
and data analysis as the Holy Trinity or
for the more ancient Roman minded
obvious the triumverate of product
Discovery everything you need is in that
Golden Triangle my my top tip here is to
try and sit between your user researcher
and your product analyst and keep up a
conversation between you I think that
the insights you gain from that
conversation will will really drive your
product to to to new
heights and don't just take my word for
it this guy used to work at Amazon and
he says a similar thing he says the
thing I've noticed is when the anecdotes
and the data disagree the anecdotes are
usually right there's something wrong
with the way you are measuring it now
big Jeff isn't saying dismiss the data
for anecdote he's literally saying be
skeptical if your gut is telling you
something isn't right and as a PM you'll
develop a great Instinct for these
things then it probably isn't and you
should check
it and so finally where Ben wants to
kick you out in the product management
World we're a bit more accommodating and
friendly and we're going to ask ask how
do we get you on board I just think if
somebody has shown the interest and the
spark to take identify a problem take a
bit of data put it around it maybe
perhaps come up to hypotheses we want to
think about how we can get them into the
community and encourage them to become
product managers themselves I think
organizations like the product school do
a brilliant job in trading out people
who want to be PMS but I know that when
I was coming into the industry I found
the first hurdle was even knowing what
PM was and it was a and it was a thing
that I could
do so I would encourage you to take
these people under your wing teach them
about product management and product
thinking and if nothing else you'll have
a group of people around you in your
business who you can rely on to provide
you with excellent material for your
product
roadmap so then to finish love your data
but be skeptical of it validate it
understand it use it to its full
potential and you'll build awesome
products and finally get out out there
and spread the good news of product
management thank you very
much
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