I see the point and I wouldn't want to belabor the metaphor, but I really feel like guitar is actually extremely difficult to even get started with. Between the awkward stretching of the fingers, how difficult/painful it is to hold down strings hard enough (and close enough to the fret) to get a clean, clear note, and how hard it is to hold those strings down in such a way that your fingers don't brush against other strings, I'd say guitar is crazy hard to start. I'm saying this as someone who has been playing and enjoying guitar for decades. Beginners have a rough time of it for awhile.

Lot of good, standard-issue advice in your replies already, so I think all I'll add is: (1) Everybody's mind is a little different, so you're likely to need to experiment with many things for a long time before you start converging on stable insights into what your specific needs are, and they're likely to be somewhat context-dependent, so they're likely to evolve over time; so above all else, be patient and go easy on yourself and focus on your long-term progress rather than your short-term frustrations; (2) ...I forgot (not joking)

Thanks very much, this sub-thread has been illuminating for me, and has the compelling quality of being obvious-in-retrospect. I now wonder what my MPC is doing, exactly, when I make an action at what appears to be a zero point. Thanks.

If I had the capacity to take on this kind of modeling project right now, I'd probably lean toward Prolog or something like an OWL/Protégé ontology. Then it could just metastasize to the limits of my time and neurochemistry.

Just doing it in Emacs is also an option.

https://news.ycombinator.com/item?id=19252952