Lots of great points. I would start with semiotics, including during the problem definition phase, otherwise you could easily end up lost in language without th

Lots of great points. I would start with semiotics, including during the problem definition phase, otherwise you could easily end up lost in language without the slightest clue of the predicament you're in. Epistemology is also useful, because it might allow one to wonder if the problem space is non-deterministic (or not discoverable as).