> contrary, there’s strong evidence of no reduction in average sleeping time and perhaps even an increase in sleeping time over this approximate time period Fo

> contrary, there’s strong evidence of no reduction in average sleeping time and perhaps even an increase in sleeping time over this approximate time period Followed by a source snippet looking at not average sleep time but prevalence of very short and very long sleep durations - outliers. Ie doesn't necessarily, or even likely, have anything to say on the subject. For such a meticulous takedown repeating exactly the kind of mistake you're criticizing seems really sloppy. And the alarm bells over "harm" seem overkill and somewhat shrill. That said, the book definitely has issues and it's good someone tries to point them out. I just feel this overshoots.