True. Whereas most Computer Science communities gather to solve a particular problem (like comprehending natural language), HCI contributions tend to be the pr

True. Whereas most Computer Science communities gather to solve a particular problem (like comprehending natural language), HCI contributions tend to be the problem definitions themselves. A common CHI paper would read "we studied a set of users X and Y and found that they tend to run into problems Z. We designed a solution W to address Z, and suggest some other work that could be done to address Z better." The conference thus contains many papers proposing radically different ways of seeing the issues that users face in computing along with radically different ways of addressing them. If these new-found problem definitions happen to gather enough attention for a sustained period of time, then it warrants a new conference of researchers ready to address those problems. But I don't think this happens often enough in CHI for it to break into sub-conferences very often. (Also, hi Jason!)