certainly it's fairly impossible to get inside a person's head and explain how we translate our thoughts into words; i can see how a behaviorist would not even try to presume to get in there and have a theory about that!

but without getting all metaphysical about communication and the nature of the inner life, certainly there is a lot of misunderstanding that goes on. lord knows we see it around here all the time -- I can't count how many times I've said, okay, then, back to definitions, do you mean X by this term we are both using?

i guess my idea of an error theory would be "not using the word in the same way." of course religious wars have been fought over exactly this kind of thing!

happy attempted communicating...:).