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Matthew Walker

Professor of Neuroscience and Psychology, UC Berkeley · 1 appearance on the record.

computed by AI from the episodes · how this works → · full disclaimer →

academicscientistauthorhostfounder@sleepdiplomat ↗LinkedIn ↗sleepdiplomat.com ↗Wikipedia ↗

Walker is a sleep researcher best known for authoring the international bestselling book Why We Sleep: Unlocking the Power of Sleep and Dreams. His work investigates the biological functions of sleep and its impact on human health, learning, and disease, which he communicates through research, podcasting, and public speaking.

4statements → 2claims → 2claims resolved → 3.75/5average certainty → 1.75/5average debate potential → 16said about them ↓

1 supported 0 partly supported 1 contradicted how the 2 claims stand · each chip opens the sources

2 assertions · 1 opinion · 1 insight · every statement was checked. The predictions and assertions are the 2 claims: statements the public record can support or contradict. 2 are resolved. Everything else (opinions, insights, what ifs, disclosures) can never be settled by the record, so it carries no assessment.

The record, in short

What the tape says about how Matthew argues and how the claims held up. Everything they said, and everything said about them, is in the tabs below.

Their most notable supported claim

Assertion Supported
Walker: Average human endogenous circadian rhythm is roughly 24 hours 11 minutes
“It runs a little bit longer than 24 hours, it turns out. It's about 24 hours and I think 11 minutes for the average human adult we've calculated it as.”
Matthew Walker Dec 27, 2022 ▶ 1:15:42 Best of 2022: Conversations of the Year

Their most notable contradicted claim

Assertion Contradicted
Walker: Counting sheep actually causes people to take longer to fall asleep
“What she found was that not only did counting sheep not make you fall asleep any faster, it actually made people take longer to fall asleep.”
Matthew Walker Dec 27, 2022 ▶ 1:26:39 Best of 2022: Conversations of the Year

Expressed certainty vs assessment result

none yet certainty 1
none yet certainty 2
100% certainty 3
0% certainty 4
none yet certainty 5

weighted support: a fully supported claim counts one, a partly supported claim counts half. Each filled bar is clickable and opens exactly those claims; "none yet" means nothing said at that certainty level has resolved yet

Everything Matthew Walker said on the Knowledge Project that made the record, most notable first. Filter by type, assessment or year in the ledger →

Insight
Walker: After a bad night of sleep, do nothing to compensate
“If you've had a bad night of sleep, here is my following best advice. Do nothing. And what I mean by that is, after a bad night of sleep, firstly, don't try to sleep it off by waking up any later than is natural. Don't sort of say, I'm going to then sleep in f…”
Matthew Walker Dec 27, 2022 ▶ 1:20:21 Best of 2022: Conversations of the Year
Opinion
Walker: Sleep Stories saved Calm and drove its near-billion-dollar valuation
“It certainly saved Calm, and it gave them a, you know, I think almost a billion dollar valuation. What saved them was Sleep Stories”
Matthew Walker Dec 27, 2022 ▶ 1:24:26 Best of 2022: Conversations of the Year
Assertion Contradicted
Walker: Counting sheep actually causes people to take longer to fall asleep
“What she found was that not only did counting sheep not make you fall asleep any faster, it actually made people take longer to fall asleep.”
Matthew Walker Dec 27, 2022 ▶ 1:26:39 Best of 2022: Conversations of the Year
Assertion Supported
Walker: Average human endogenous circadian rhythm is roughly 24 hours 11 minutes
“It runs a little bit longer than 24 hours, it turns out. It's about 24 hours and I think 11 minutes for the average human adult we've calculated it as.”
Matthew Walker Dec 27, 2022 ▶ 1:15:42 Best of 2022: Conversations of the Year

The other half of the tape: Matthew Walker's own voice is left out of every number here. Other people bring the name up 16 times in 3 episodes on the Knowledge Project. every mention, with the transcript →

Who brings them up most Shane Parrish 11Dr. Andrew Huberman 3Thomas Tull 2

Every mention by year

tap a year for its mentions
00811522019202020212022episodesmentions
0122019202020212022episodes it came up in
0041822019202020212022episodesmentions per episode
2022 14 mentions in 2 episodes 7 per episode
2019 2 mentions in 1 episode

Appearances (1)

EpisodeDateSpeaking time
Best of 2022: Conversations of the Year Dec 27, 2022 14m
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