We Have No Idea: A Guide to the Unknown Universe

by Jorge Cham, Daniel Whiteson

Prepare to learn everything we still don't know about our strange, mostly mysterious universe.

PHD Comics creator Jorge Cham and particle physicist Daniel Whiteson have teamed up to spelunk through the enormous gaps in our cosmological knowledge, armed with their popular infographics, cartoons, and unusually entertaining and lucid explanations of science.

In We Have No Idea, they explore the biggest unknowns in the universe, why these things are still mysteries, and what a lot of smart people are doing to figure out the answers (or at least ask the right questions). While they're at it, they helpfully demystify many complicated things we do know about, from quarks and neutrinos to gravitational waves and exploding black holes. With equal doses of humor and delight, they invite us to see the universe as a vast expanse of mostly uncharted territory that's still ours to explore.

This entertaining illustrated science primer is the perfect book for anyone who's curious about all the big questions physicists are still trying to answer.

Genres: Science, Nonfiction, Physics, Astronomy, Popular Science, Space, Humor

354 pages, Hardcover

First published May 9, 2017

About the author

Jorge Cham is a Chinese-Panamanian post-doc best known for his popular newspaper and web comic strip Piled Higher and Deeper (PhD Comics). He first started drawing PhD Comics as a graduate student at Stanford University, and has since been syndicated in several university newspapers and in three published book collections.

Jorge Cham received his Bachelor's degree from Georgia Tech in 1997, and earned a PhD in mechanical engineering from Stanford. He subsequently worked at Caltech as an instructor and as a researcher on neural prosthetics.

In 2005, Cham began an invited speaking tour of over 80 major universities delivering his talk titled "The Power of Procrastination". In this lecture, Cham talks about his experiences creating the comic strip and examines the sources of grad students' anxieties. He also explores the guilt and the myths associated with procrastination and argues that in many cases it is actually a good thing.

Reviews

[Tsedai · Rating 4 out of 5]

If you like your physics with a side of dad-joke level puns, then this is totally the book for you. It's a fun romp through some of the wilder aspects of physics, though if you've got a fairly high level of understanding to start with then this book might feel like something of a review. For those who don't know physics at all, I'd worry that they might not be able to distinguish some of the punnier jokes, but I think most people should be able to parse it out. Overall a fun read to get you thinking, with lots of interesting concepts. I highly recommend reading it in conjunction with The Three Body Problem by Cixin Liu because a lot of the crazier topics have a fair bit of overlap.

[Zero · Rating 4 out of 5]

The information in this book, explained in a way that my mind can (mostly) understand, is amazing.

This is a book that I needed to pay close attention to. A lot of non-fiction books are like that, but this really stretched my brain and my way of understanding.

At first, I thought the humor was too corny, but it grew on me. All the talk about llamas, papayas, ferrets with water balloons, hamsters with flashlights, etc. eventually became kind of funny.

[Krista · Rating 4 out of 5]

On the inside flyleaf of We Have No Idea, it states:

Armed with their popular infographics, cartoons, and unusually entertaining and lucid explanations of science, (Jorge Cham and Daniel Whiteson) give us the best answers currently available for a lot of questions that are still perplexing scientists, including:

• Why does the universe have a speed limit?

• Why aren't we all made of antimatter?

• What (or who) is attacking the Earth with tiny, superfast particles?

• What is dark matter, and why does it keep ignoring us?

And after finishing the book, I can't help but observe that these four particular questions are among the many that the authors are unable to answer: We simply don't know. They don't give us many answers at all, but they do ask a fascinating string of questions that are revelatory in their unanswerability. The science here is easy to understand (all anecdotal, no math) but I could have done without the unending puns and quips (especially annoying when 95% of 129 footnotes are distractingly lame jokes; I would have skipped them all if it weren't for the 5% that were relevant). As I was reading I kept wondering, "Are the jokes ruining this for me?", but I guess they did serve to keep everything easy and accessible: this is pop-science-light; appropriate for a lay-reader like me but unlikely to be of use for the scientifically trained out there.

I do read some science books, but there's a lot in We Have No Idea that I haven't heard before. As that bar chart attempts to illustrate, the matter that we are able to describe and interact with only comprises 5% of the “stuff” of the universe. We know that dark matter makes up another 27%, but while we can observe its effects on a cosmological scale, we can't see it or understand what it is. That leaves a whopping 68% made up of dark energy – something we can neither observe or understand but which we know must exist because it explains the present-day expansion of the universe (which is why it's called “energy”, even if it's not energy as we would know it) and every mathematical proof confirms that there's 68% of something missing from our observation-based models. When I went to high school, there was a whole gang of subatomic particles that seem to have become irrelevant: We now know that everything we observe is made up of only electrons, up quarks, and down quarks; and while there are nine other subatomic particles, they're weird and we don't know what they do. I thought I understood the concept of mass, but it's weird, too:

• It's weird because the mass of something is not just the mass of the stuff inside it. Mass also includes the energy that binds the stuff together. And we don't know why that is.

• It's weird because mass is actually like a label or a charge (it's not really “stuff”), and we don't know why some particles have it (or feel the Higgs field) and others don't.

• And it's weird because mass is exactly the same whether you measure it via inertia or gravity. And we don't know why that is either!

I like the idea that superfast cosmic rays are constantly bombarding us that must be coming from “a new kind of object in the universe that we don't know about” (and that the authors would like you to use your personal devices as cosmic ray detectors while you sleep, info here). And I like all the quirky coincidences of our universe: that subatomic particles could carry a charge of literally any value, but happen to have those that perfectly balance each other out (we wouldn't be here otherwise); that there is the ideal amount of mass and energy in the universe to give it its flat shape (one more or less hydrogen atom per cm² of space would curve or bend it in unusual ways); humans have evolved to our scientifically literate present at the perfect time in the history of the universe – when the forces of gravity and dark energy are balanced in their push and pull of the galaxies – in which to observe not only superclusters (“the largest structures the universe will ever know”) but also the routine night sky that first started us on the path to understanding the cosmos (a billion years from now, our sky will be dark as old stars die and everything else moves further away from us). As much as I liked these coincidences, the authors are careful to caution us away from finding anthropocentric significance in them (I seem to remember Stephen Hawking once saying that it's not that the universe was created specifically for human life, but that the universe, made randomly as it was, could only have created life that could survive in its uniquely random conditions. Something like that.)

In the end, the unanswerable questions are all fascinating to think about, and along the way, Cham and Whiteson caught me up on what we do know today. I could have done with fewer llamas, ferrets, and puns, but without straining my brain, I learned plenty. Hard to complain about that.

[P42 · Rating 5 out of 5]

RECENZJA WIDEO - http://bit.ly/p42nmp

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[Nika · Rating 4 out of 5]

Мені сподобалася книга! Почуття гумору авторів справді вирішує все😅 якщо ви такий самий профан у фізиці та у знанні про Всесвіт, але хочете пізнавати все ж щось, а особливо ТЕ ЩО МИ НЕ ЗНАЄМО про нього - рекомендую! Не все прям просто буде, але точно збагатить вас на знання ✨👌

[Yuliia Zadnipriana · Rating 5 out of 5]

Скільки всього ми не знаємо!

Навіть якщо ми щось і знаємо, це просто мізер на фоні того, що ми НЕ ЗНАЄМО.

Так і ця книга фокусується більше на питаннях, а не на відповідях, і як це круто!
Це складно уявити, але про таке читати цікаво!

Про поняття маси, простору часу; про чорні діри, кварки, нейтрино, теорію великого вибуху та теорію струн.

На живих та дотепних прикладах про лам, мандарини і хом'яків автори змушують ваш мозок просто закипати від кількості загадкової та таємничої інформації про наш всесвіт.
Не уявляю, як подібне може бути НЕ ЦІКАВИМ.

Всі ці питання про те, хто ми, звідки взялися, куди прямуємо, що було спочатку, що буде наприкінці, що нас оточує – це все так закручує в роздумах, що відірвавшись від сторінок книги хочеться зануритись у документальні фільми та інші додаткові джерела.

А як круто вона написана!

Не суха теорія, а живий діалог, в якому вас не перестають дивувати, бентежити та підвисати в роздумах. Або зупинитись, щоб розглянути дотепні та доречні скетчі та комікси.

Людство вже чимало знає про світ.
Але не знає — ще більше.
І ця книга вплине на вас двояко:

Ви точно дізнаєтеся більше про те, як влаштовано все довкола. Але від того у вас виникне ще більше запитань до світу.

І це прекрасно, адже нам є куди рости і рухатись у своїх дослідженнях 😉

[Peter Tillman · Rating 2 out of 5]

I liked the *idea* behind this book: two hip young physicists, one a cartoonist, explaining how little we actually know about our universe. The execution -- well, the (alleged) humor, while OK in small doses, wore me down. I did learn some things, and the cartoon-diagrams were (sometimes) helpful. But, basically, the book's aim-point is people who know little about modern physics. Which does (kind-of) include me, except that I am (was) a professional geologist/geochemist, and I keep up with general physics (as best I can) at the Scientific American level. So, DNF at about 25% in: not really a book for me.

[Greg · Rating 2 out of 5]

A very intriguing title, certainly and I found this to be humorous at times, but I don't know enough about quantam physics, etc., to tell the real from the jokes. For example, most of the footnote explanations are jokes themselves, but I'm not sure about the footnote 67 on page 156: "Muons and taus are not extra-dimensional versions of electrons, because they don't have a regular mass spacing , and don't have the same weak-force interactions as electrons." Some readers might think, "Oh, exactly." Some might laugh, IF this is a joke. And I think it must be a joke, as are most of the footnotes, but I have no idea. When the author talks about things I already know (the universe is expanding) and the author points out we really don't know why, I get that because I know that already.. But most of the time I wasn't sure what was fact or fiction. It took me three readings of Hawking's "Brief History of Time" before I felt I could follow it through. Then it was republished with an additional chapter or two and it felt to me the author of "Brief History" may have been just making things up all along. So, all in all, I really don't know, within this book, what we really do know and what we really don't know. Maybe that's the point. But I don't know, hence my two star rating. I recommend this to quantum physics experts only. And Sheldon.

[César · Rating 5 out of 5]

If you gave up reading Stephen Hawking because you couldn’t grasp it but you really like science and want to understand weird and opaque concepts like particle theory, black matter, space ripples and the meaning of live, this is the book for you.
It is great and fun reading, by real scientists with a no-bullshit approach on some of the most complex matters of cutting edge physics.
Highly recommended.

[Nina Miteva · Rating 5 out of 5]

Ревюто в Wanderbook

Тази книга е също така известна вкъщи като "книгата за физика с лами". Но не се подлъгвайте! Всъщност има и купища други неща освен лами (например слонове), и ще получите представа за страшно много.

Хорхе Чам е доктор на инженерните науки, който се вихри като художник на комикси, а Даниел Уайтсън е физик в областта на елементарните частици. Двамата автори се нагърбват с нелеката задача да обяснят ясно, разбираемо - и илюстрирано! малкото, което знаем за нашата вселена, и си поставят дори още по-висока цел - да задават правилните въпроси за нещата, за които нямаме никаква представа. Тази книга е и като въведение в основните постижения на физиката от последния век, открития като кварките, теории като Стандартния модел и Струнната теория, разликата между антиматерия и тъмна материя.

Ако горните неща ви звучат плашещо и сложно - не се бойте. Първо, защото така или иначе нямаме никаква представа, и второ, защото Чам и Уайтсън са се постарали да обяснят нещата максимално добре.

Помните ли поредиците "Страховитото в историята" и "Страховитото в науката"? За мен те бяха много по-лесно запомнящ се и интересен материал от всеки учебник. И естествено, изключително забавен. А сега си представете един ъпгрейднат вариант на "Страховитото в науката" за модерна физика в 400 страници. Всъщност, няма какво толкова да си го представяте - просто вземете "Нямаме никаква представа".

Хорхе Чам е илюстрирал, а Уайтсън е разказал всичко с много разбиране - както към материята, така и към нивото на потенциалния читател. Цвилила съм от смях през половината книга, докато всъщност разбирах важни неща. Прочетох "Нямаме никаква представа" преди "Физика на невъзможното", и тя реално ми даде солидни основи. Едно от нещата, които най-много ми помогна да разбера книгата на Мичио Каку, бе обяснената тук причина за лимитиращата роля на светлинната скорост и последиците от превишаването ѝ. Друго също чудесно и илюстрирано нещо бяха допълнителните измерения. Изобщо, двете книжки се комбинираха чудесно, а "Нямаме никаква представа" би била чудесна към всяка друга книга за физиката.
Примерите са просто уникални :D Същевременно обаче с тези шантави мисловни експерименти, където разфасоваш лами, един от най-ценните уроци, които ми даде тази книга, е да не се предоверявам на примерите и сравненията, и да се опитам да мисля по-широко. Ако мога неточно да цитирам текста: "В един момент е окей да кажеш на малката си дъщеричка, че тигърът е голямо котенце, но после, когато тя бръкне в клетката в зоопарка, изведнъж ти си безотговорния родител".


Те го бяха разказали по-смешно. :D Но с други думи, тази книга ми помогна да откъсна съзнанието си от представата за атомите като за малки топченца с левитиращи около тях още по-малки топченца, който образ ме преследва още от гимназията. Считам това за голяма победа за себе си.

Затова, ако искате да стартирате читателското си пътешествие из дебрите на физиката и астрономията, горещо препоръчвам първата ви спирка да е "Нямаме никаква представа". Освен, че е лека и забанта, че щрихира много основни елементи и теории за модерната физика, тази книга не го прави по свръх-опростяващ начин. Напротив, успява да подготви читателя за това колко необятно е всичко, как нещата бягат от интуитивната ни логика, заложена от материалния свят, в който живеем. И за това, че нямаме никаква представа :D Но някой ден, може би, ни предстои да разберем. И със сигурност, да разберем повече от това, което знаем днес

[Eric Lin · Rating 2 out of 5]

I couldn't take it. The writing is super patronizing, and tries to make everything a joke. There were informative portions here, but the tone was just insufferable (similar to how I felt about The Hard Thing About Hard Things)

I get that this was written to make astrophysics more palatable to 'normals', but its effect felt more like the phenoma being addressed in The War on Normal People.

You need to make jokes about deconstructing llamas (there is more than than one llama joke in this
book, and one is already one too many), or how subatomic particles are having a party, to write an engaging book about a topic that is already very interesting. There was a particularly cringe-inducing section about fart particles ('farticles' groan).

Bonus haterade: I listened to the audiobook, and they would include sound effects (SOUND EFFECTS!!) to crank these jokes up to a 11 on the 'how terrible are these jokes' scale. Do you really need to play fart sounds to accompany your farticles joke? If I wanted this level of humor, I would have stayed in the #dadjokes (AKA #badjokes) Slack channel at Goodreads.

Anyway, I appreciate the effort, but if there's one thing I learned for sure from this book, it's that this guy most definitely has no idea.

[Jose Moa · Rating 5 out of 5]

This book is a good complement to de book What We Cannot Know by Marcus du Sautoy,because is not centered so much in the phylosofical side as in physics and cosmology.

We are living a golden age of science popularization with a lot of good books abot disparate subjects.
This one is a example,is a book that joins science,frontiers of science ,fine humor and amusing drawings.
The book beguins saying that we only know the 5% of matter ,the rest 95% composed of dark matter and energy we almost have no idea.In the following chapters the book explains what we actually know and the questions about we have no idea.
For put a few examples :
Why are 3 generations of quarks and leptons? We have no idea.
Are the quarks and leptons actually elemental? We have no idea.
Why gravity is so weak with regard the other forces? We have no idea.
Why there is a speed limit in the universe and why have its value? We have no idea.
What is the origen of cosmic rays? We have no idea.
Is the universe finite or infinite?We have no idea.
Are we alone in the cosmos? We have no idea.
why there are matter and no antimatter? We have no idea and so on.....

A recomendable,easy reading,fun ,deep book about the to day limits of the knowledge of the our universe.

[Yun · Rating 4 out of 5]

While most books tell you everything there is to know about a topic, We Have No Idea flips that on its head and tells you all that we still don't know about physics and the universe (which is a lot, it turns out). I went into this book having some knowledge of the topics covered, and it was really interesting to see them approached from the other side of what we don't know yet, especially with respect to how these topics relate to each other and fit into a bigger picture.

The tone and images throughout are a bit jokey and tongue-in-cheek, which is to say there are a lot of good (so good they're bad?) puns. I know some readers thought the jokes were a bit distracting, but I didn't feel they took anything away. I enjoyed them sprinkled through the pages and found that they livened up what otherwise would be very serious topics.

I think if you go into this book expecting answers, you'll be disappointed. Instead, this book reads more like a discussion. It slowly explores our current thinking, how we got there, the limits of our knowledge, and where possibilities lie for more research in the future. At times, it does repeat itself with what it doesn't know, so the book could have been a bit more concise in its presentation.

Overall, I got a lot of fascinating tidbits out of this book. It helped me connect some of my disparate thoughts into a more coherent picture of our universe, and left me with many questions yearning to be answered.

[Jani-Petri · Rating 3 out of 5]

Pretty good popular science

Worth reading. Maybe too much focus on cosmology for my taste, but we can not have everything. 3 more words needed because of this stupid app.

[Raed · Rating 5 out of 5]

5⭐✔
RTC!

[Jamie · Rating 5 out of 5]

It's hard to overstate how good this book is at conveying, in a simple fashion and with an unending series of graphics and "dad jokes", some very complex materials.

Each chapter is a topic in physics that "we" (we being scientists - I have almost no idea about most things) have surprisingly little idea about (hence the name), with topics that include time travel, the nature of empty space, why particles have mass, how big the universe is, etc. It's basic and strips out all of the math and hard bits, but what remains should prove fascinating for anyone with even a passing interest in science. The true success of this book is that it somehow strikes a perfect balance between something that a junior high student could easily follow, while avoiding a tone of "talking down to" the reader.

One thing though: the jokes. They are uniformly terrible. Just so, so terrible. And yet...they become endearing almost immediately; probably because each page is bursting with a sense of enthusiasm and fun.

[Mehrsa · Rating 3 out of 5]

The ideas are so complex and so interesting but why does Cham talk to us like we're children? There are so many cutesy dad jokes and puns in here and I came for the science. I can't imagine anyone picking up a book about the universe that can't read it just for the ideas. It was so frustrating to read beyond all the cute to get to the very fascinating text.

[Anna · Rating 4 out of 5]

A very lighthearted approach to some heavy questions and it's certainly solves none of them. I enjoyed the weird jokes and the fool proof examples make it a bit easier to understand the complicated science underneath. A good book to start your science quest with!

[kartik narayanan · Rating 4 out of 5]

Review coming soon

[Юра Мельник · Rating 4 out of 5]

Поняття не маю, чи знайдете ви веселішу книжку про життя Всесвіт і все інше. Українською вона звучить як ранні Сімпсони на М1

[Christopher Bradford · Rating 2 out of 5]

This book was OK. I was a physics and astronomy major in college so I already knew most of the stuff they were talking about. Take out what I already knew and all of the corny jokes and attempts at humor and I found about 20% of the book useful. I would recommend it to anyone who doesn't have a strong science background. If you do have a strong background in science (physics, astronomy, cosmology) then much of this book will just be annoying.

[Charlene · Rating 4 out of 5]

Entertaining mix of text and toons. This is a great book for younger readers and those intrigued by physics but nervous or intimidated by the possibility of complicated explanations. There's no math here, but there are lots of interesting ideas--with good, vivid examples--and plenty of pop culture references and funny bits to stir up just about anyone's Sense of Wonder.

[Travis S · Rating 5 out of 5]

Daniel and Jorge signed a pre release copy for me, and I'm a very excited to have read it! Very funny, as expected from the creators of PhD comics. Gives a great impression of the scope of our universe and just how much we don't understand. I recommend it for anyone to read!

[MTK · Rating 5 out of 5]

Informative and highly entertaining, and, most importnantly, completely accessible to the layman reader.

Διαφωτιστικό και διασκεδαστικό, και εντελώς προσιτό σε έναν αναγνώστη που δεν έχει γνώσεις ιδιαίτερες φυσικής και μαθηματικών.

[Elina Gomberg · Rating 4 out of 5]

היקום הוא מקום מופלא. זה נראה שהאנושות גילתה המון תגליות מדהימות עליו ואנחנו יודעים כל כך הרבה. אבל האמת היא שאנחנו יודעים קצת מאוד על היקום סביבנו. כמעט כלום. לפעמים מה שאנחנו לא יודעים, יותר מעניין ממה שאנחנו כן יודעים. הספר כתוב בצורה קולחת ומשעשעת, הוא זורם ומלא דוגמאות מצחיקות ונפלאות. הוא כן מסביר גם מה אנחנו כן יודעים על היקום אבל דואג גם להראות כמה זה קצת לעומת מה שאנחנו לא יודעים, ואיך אנחנו יודעים שאנחנו לא יודעים שזאת שאלה מעניינת בפני עצמה. איך שום צורך בידע במדע או בפיזיקה לפני הקריאה, הספר ישלים לכם את כל הפערים בלי בעיה ובלי אי הבנות. החיסרון היחיד שלו הוא שלפעמים הנושאים הם קצת קשים להבנה אז צריך להתרכז בקריאה, משהו שכוס קפה יכול לעזור בו, ואז תשתו קפה בזמן שתקראו ספר שמביא קפה בתור דוגמה.

[Христо Блажев · Rating 4 out of 5]

Нямаме (почти) никаква представа какво се случва около ни – но ще научим: http://knigolandia.info/book-review/n...

Има нещо изключително привлекателно в тези умни научно-популярни книги, които използват хумор за олекотяване на сложната материя. Такава прочетох наскоро - “Щурият мозък” на Дийн Бърнет, такава е и “Нямаме никаква представа” на Хорхе Чам и Даниъл Уайтсън, една прекрасна книга, която покрай честното признаване на всичко, което не знаем, се изхитрява да направи доста ясно изложение на това, което знаем. И което научихме едва за около век – както обичам да казвам, това е времето от нескопосаните прототипи на братя Райт до изпращането на апарати извън Слънчевата система, какво по-добро доказателство за мощта на науката. Но тази книга служи като студен душ срещу всякакво задоволство. Защото почти нищичко не знаем – и това е страхотно!

Издателство "Изток-Запад"
http://knigolandia.info/book-review/n...

[Jenna ❤ ❀ ❤ · Rating 5 out of 5]

"We Have No Idea" is perhaps the funnest and funniest physics book I've yet to read! It's intriguing and profound, whilst also easy to understand, with great comic illustrations, graphs, and many jokes.... though some of the puns were a tad groan-worthy! It's an extremely gratifying read, discussing what we do know -- and pointing out many of the things that remain a mystery in our wild and wonderful and wacky universe. "We Have No Idea" is a must-read for anyone interested in this topic. It would probably be a great introductory book on particle physics and astrophysics, though I can't say for sure as I've read many books on this subject. It's definitely fun to read and very accessible to the scientific ideas discussed within.

[Terry · Rating 3 out of 5]

This book has a compelling premise of "these are the open questions in physics and some guesses as to what the answers could be". For instance, we've identified and characterized some 18 sub-atomic particles yes seemingly all of the matter we see is made up of only three (up quark, down quark, and the electron) plus the force-carrying particles. What are the other 12 for? The book then walked through some 10 to 15 more questions and in some cases outlined what potential answers could look like.

As much as I enjoyed myself, the book was constantly tripping over itself to make jokes. These jokes weren't generally funny, didn't help clarify the material, and simply added length. It was maddening. This book also seemed to very much be a "whet your appetite" book with the answers just being sketches and there being no in-depth discussion of who's working on the problem and the technology required to tackle it.

Overall this book was frustrating but acceptable with occasional sections that were good. You can get most of the way here by reading the Wikipedia articles on "open problems in physics".

[Rosey Waters · Rating 4 out of 5]

Physics has always been my weakest subject in the sciences. It seems to be where my brain stops being able to pick things up with ease and instead goes “but whyyyyyyyy?!”

So when I picked this up I thought it would help. Easy physics! Excellent!

I still don’t understand physics. I found this boom to be dad joke filled and amusing all the same (the audiobook is filled with audio effects too).

Ultimately, this was interesting but not illuminating. I enjoyed it, and even had some parts where I FINALLY understood some concepts I’ve struggled with make sense finally, but ultimately it was a book about things we don’t know.

So I still don’t know much about physics!

[Akhil Munjal · Rating 5 out of 5]

This book explains the deepest darkest secrets of our universe. Emphasis throughout the book are on questions science has no anwser for. And hence this book is different from many other books because instead of filling pages with half baked theories that may or may not stick, this book is upfront about what science just doesnt know, followed-up with some of the most promising explanations. I would recommend this book to readers with an existing basic knowledge of physics and science with a motivation to learn more without running into complicated equations and mathematics.
I loved the fact that the audio book version uses well placed intonations and jingles that make this quite an interesting listening experience. I wish more audio books would take a cue from this approach.