A forum records free-form conversations between specific people, where every post can be edited at most by its original author (if even that). SE sites are lib

A forum records free-form conversations between specific people, where every post can be edited at most by its original author (if even that). SE sites are libraries of questions that may be generalized beyond the original author's circumstances, and if someone's post does not fit the rigid Q&A form, it may be moderated away.