I've said this before, but one of mine is that Socionics provides a language to talk about things that we would have noticed anyway but might not have been able to describe in a way that we could effectively talk about with others [e.g. words we use to describe people are often subjective ["nice"; "friendly"; etc.] and can be interpreted in ways other than what the explainer intends] to really build on or compare observations with. Learning Socionics is like learning a new kind of literacy, in a way.