Yeah, i thought section 7 and and 17 were particularly weak. Overall it's always good to hold someone accountable for clearly false things like Section 4.

In Section 7, he expands on that speculation, but indeed, in the same way you should not trust Walker at face value, being critical of some of the speculations made by Guzey is also probably a safe bet. For the non-speculative parts, i.e. hard numbers, I do tend to agree with much of Guzey.

south_korea_ln

> Walker’s book has likely wasted thousands of hours of life and worsened the health of people who read it and took its recommendations at face value (Section 7).

I disagree with this speculation. My own speculation is that it caused many people to examine their own sleep schedule for the first time and consider improving it. 

mikey

> No, shorter sleep does not imply shorter life span

That's good to know!

science

A reminder to never trust someone based on the argument of authority...