Whoknowsidont was giving a detailed, valuable response to your specific question about pilots and surgeons.

And then you insult them for "going off about tired pilots", and falsely claim they were defending the study in question.

You might want to review the HN guidelines:

> Be kind. Don't be snarky. Converse curiously; don't cross-examine. Edit out swipes.

https://news.ycombinator.com/newsguidelines.html