# Why is the theory of mind named as such?

Theory of mind is the ability to attribute mental states—beliefs, intents, desires, emotions, knowledge, etc.—to oneself, and to others, and to understand that others have beliefs, desires, intentions, and perspectives that are different from one's own.

So am I correct in saying that for a dyadic relationship, there are 2 "theories of mind", and for a group of $n$ person, there would be $n^2-n$ "theories of mind"? I understand a system of inferences is properly called as "theory", but when so many people has different theory it loses the universal connotation as commonly used in "theory of planned behavior" or "theory of gravitation". Should it better be named as "theory-forming of other's minds"?