Matthew Walker's "Why We Sleep" Is Riddled with Scientific and Factual Errors - Alexey Guzey

See discussion of this essay on the forum, Hacker News (a), Marginal Revolution (a), Andrew Gelman’s blog 1 (a), 2 (a), 3 (a), 4 (a), /r/slatestarcodex (a), Twitter (a), listen to BBC interviewing me and Walker himself about it or listen to my interview with Smart People Podcast discussing it.
Note: I link to a bunch of paywalled studies in this essay. Please do not use sci-hub to access them for free and do not use this trick (a) to easily redirect papers to sci-hub.
For the clearest …