Bob La Londe wrote:

Fatigue. When I reach a certain point every tool in the shop is
dangerous.

Agreed. That's when I start pushing too hard, getting too
wreckless/careless.
Especially as I work with more tools that cut really fast, I'm
recognizing that I have
be more careful that I used to be. I should be grateful for the numerous
small cuts of my youth that taught me good lessons!