Once, a couple of years ago, I had a chat with a woman online, and I used "rational" in describing a given choice (we both disapproved) - something like: "Well, this is not something I consider rational".

She was a bit surprised at my choice of words (we were basically in agreement on the main topic, but the moment I said "Rational" she reacted badly) because in her experience "rational" is almost a bad word, because (according to her) it is banded around (by men) to belittle their counterpart in a discussion.

I told her that I had just finished an online course on IA, and therefore I meant "rational" strictly in the sense of "rational agent" as per Wikipedia: a rational agent is an agent that has clear preferences ... and always chooses to perform the action with the optimal expected outcome for itself from among all feasible actions.

IA? Inflammatory Arthritis?

AI - typo, sorry