first, i recoil at "advanced" and would prefer "pure". that aside, > You move easily among ... different ways of representing a problem is like 3 answers in

first, i recoil at "advanced" and would prefer "pure". that aside, > You move easily among ... different ways of representing a problem is like 3 answers in one. representation has specific meaning. for me, however, it's not an ideal phrasing: i prefer not to think in terms of "problems". it can be productive to do so but also messy. (as if i knew a/b math :p)