Theories, instructions, systems, classification, typology, pattern, core, analysis, understanding:
Fine, but only if (and as long as) it's connected to real life. Anything else is boring and pointless, a total and utter waste of time (that's what it feels like for me - I know it's different for others, and I know that my own pov. here isn't the whole truth). My Ti is a good workhorse, but it's best if we just jog along at a steady and very slow pace. Anything else would probably get us onto thin ice sooner or later.