1[KGVID width="480"
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  0/18/13 - I had a habit then of having too many tabs open at
  once. I'm looking at the tabs.... and I'm like, "WHAT WAS I
  STUDYING?" - I have notes from then, so I _can_ trace it back.
  [I let a google search remind me what "rigged hilbert spaces"
  was and _why_ it, combined with chinese remainder theorem (for
  chinese remainder, think of different tempos playing at the same
  time, usually out of step with each other but occasionally
  hitting the same beat, then separating again for a time)...
  ...anyway, whatever I was studying at the time had my full
  attention I guess. I guess once I figured out which system I
  liked the best, if I found one, I'd decided I was done with that
  area of study and I moved on to something else. ADD I guess.