Earlier quoted context omitted.
> Pain a warning signal from the body. It's something one should listen to, not just try to ignore and overrule. This is vastly overstating the rationality of the human body. It's no more rational than the human mind, which is often quite irrational. Your body isn't the product of medical school, nor intelligent design, but rather random natural selection, which is decent but demonstrably far from perfect.
> It's no more rational than the human mind Neither is a car, but I still take it to get checked out when a warning light is on.
I can't believe I need to say this, but cars did not evolve by natural selection. Cars are intelligently designed (by humans, not by God) to show a warning light when there is a problem you should get checked out. So cars are actually rational in that respect.
Hacker News comments never fail to depress me.