A chap in Arizona, Pablo Martinez, believed that his six-year-old son was possessed by a demon, because the boy exploded in a "fit of unnatural rage" at bath time. And so, of course, he poured scalding water down the boy's (presumably unwilling) throat, then held his head under water for 5-10 minutes. Well, naturally, the boy died -- presumably taking the "demon" with him.
I often wish the human species wasn't quite so prone to believing irrational things. It's not always a good thing...
I have the same wish as you.
All across the human spectrum, irrational things can be believed.
However, there is no guideline that universally defines irrational behavior in all situations.
I have seen people make irrational choices ( based upon my definition at the time) and be vindicated for doing the right thing. Of course, I have seen just the opposite as well, many times.
I think rationality judgement by others is very subjective, based upon their ideas, beliefs, biases, and emotions.
I think the standard criteria used in the law is the best judgement. If they are not a threat to physically harm others, or themselves, just leave them alone.
Irrational choices have a resultant effect, and the person must suffer the consequences, whether it be an angry wife, losing a job, or spending your life in prison.
