I was particularly interested in this site since I'm designing and evaluating a novel user interface for my thesis. During my design process I would like to back up design decisions with theory.
Human-computer interaction is a discipline concerned with the design, evaluation and implementation of interactive computing systems for human use and with the study of major phenomena surrounding them.
User Experience Stack Exchange already discusses user experience, but generally there are more practical questions asked there and it's less scientific than I expect this site to be.
Which is in scope here and where to draw the line?