Why We Sleep
Why We Sleep by Matthew Walkerby Matthew Walker
Shares rank 28 of 47 popular science books by recommenders
Recommended for changing views on sleep and drinking. Critics cite statistical errors and alarmism some readers took from it.
3 people recommended Why We Sleep by Matthew Walker in Hacker News comments and 1 criticized it, November 2025 to October 2026.
Summary written by Claude from 4 comments.
4 people gave an opinion
- recommend it
- 3
- mixed feelings
- 0
- warn against or regret it
- 1
The record
Recommended in 3 of 12 months
In 3 different threads.
- November 2025: not recommended
- December 2025: not recommended
- January 2026: not recommended
- February 2026: not recommended
- March 2026: not recommended
- April 2026: not recommended
- May 2026: not recommended
- June 2026: recommended
- July 2026: not recommended
- August 2026: recommended
- September 2026: recommended
- October 2026: not recommended
Why it doesn’t carry the badge
- 3 people recommend itNeeds 10 or more, not met.
- 3 recommenders for every criticNeeds 2 to 1 or better, met.
- Recommended in 3 of 12 monthsNeeds 4 or more, not met.
- Recommended in 3 threadsNeeds 5 or more, not met.
- The biggest thread supplies 33% of its recommendersNeeds half or less, met.
The same rules apply to every product, and the badge can’t be bought. Mixed feelings count toward neither side. How the badge works
What people say about it
Reasons grouped from a sample of 4 of the 4 opinions about it, picked in proportion to how many people recommend it, have mixed feelings and criticize it. Each mark is one comment in the sample. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Changed views on sleep's importance
“changed my perspectives on the importance of sleep”
Comment from 15 Aug 2026 in “Bedtime Procrastination” Better understanding of the topic
“reading the book gave me better ways to understand how good it is”
Comment from 27 Jun 2026 in “'Careless People' author claims Meta surveilled her for 12mos to enforce silence” Changed view on drinking
“Why We Sleep really impacted my view on drinking.”
Comment from 29 Sep 2026 in “California farmers are struggling to sell grapes as demand for wine drops”
What people warn about
Each mark is one comment
Statistical errors and alarmism
“Criticism surrounding the book involved concern about statistical errors in the book and the alarmism it generated in some readers.”
Comment from 15 Aug 2026 in “Bedtime Procrastination”
Other popular science books people recommend
The four most recommended other popular science books, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Mixed | Criticize | Approval | Months | Had for | Badge |
|---|---|---|---|---|---|---|---|
| Gödel, Escher, Bachby Douglas Hofstadter | 37 | 9 | 10 | 79% | 9 | — | Approved |
| The Selfish Geneby Richard Dawkins | 13 | 1 | 5 | 72% | 8 | — | Approved |
| Thinking, Fast and Slowby Daniel Kahneman | 13 | 2 | 13 | 50% | 7 | — | — |
| Thinking in Systemsby Donella Meadows | 13 | 0 | 0 | 100% | 7 | — | Approved |
| Why We Sleepby Matthew WalkerThis page | 3 | 0 | 1 | 75% | 3 | — | — |
Also compared with A City on Mars by Kelly and Zach Weinersmith.
What people said
All 4 opinions about it, newest first. Each links to the original comment.
“Why We Sleep really impacted my view on drinking.”
“Criticism surrounding the book involved concern about statistical errors in the book and the alarmism it generated in some readers.”
“changed my perspectives on the importance of sleep”
“reading the book gave me better ways to understand how good it is”
Counts come from 1,791,911 Hacker News comments labeled by Claude, November 2025 to October 2026, with data through October 31, 2026. Counts updated 3 Nov 2026. How we count. Report a mistake.