Having suffered from poor vision my entire life, I'm aware of
  contrast but for me, the sharp lines of contrast are less
  impressive - perhaps due to not getting glasses 'til I was 7 and
  having extreme nearsightedness.

  There are two mechanisms in the brain for discerning objects;
  the one that makes the imaginary crispy lines of perspective and
  outlining objects, and the other for the color and the texture
  and the fuzzies stuff of appearance.

  Also not seeing in 3D in the same way as binocular vision (I
  tell by size difference, not by binocular vision... making my
  only 3 months of baseball in 7th grade somewhat frightening to
  me to be in the outfield once, as a ball came _straight at me_
  and I watched it get bigger, but couldn't get my glove in the
  right place quickly enough.... my system of crispy lines was
  probably utilized for different purposes, I suppose.

  The machine is in there, but it got repurposed. I'm still trying
  to figure out "for what", but I'm thinking it's used for
  analysis of properties and attempts at clarity of expression by
  pointing out subtleties of color graduations, fuzziness,
  textures and variation.

  I've always been obsessed by detail.

  If you can deal with squeaky 7 yr old Kenneth Udut,
  [1]https://soundcloud.com/.../snowflake-song-kenneth-udut-age-7
  I wanted to play the sound of a snowflake falling, "In every
  detail" and then apologized because I couldn't finish (because I
  ran out of piano room - not enough octaves) -

  "Well, I didn't finish but, it was good, wasn't it?" -
  apologizing yet assuming it was good, yet expressing a tiny bit
  of doubt.

  "Yes it was", I sang and played in 3 abrasive notes that sought
  resolution to the chord

  "Yes it was" I sang and replayed the broken up chord with
  certainty, finalizing it with the chord playing at once and
  saying "yes".

  It's not that I'm narcissistic, but in the processes of trying
  to discern Universal truths, I find it's been important to go
  back through my own personal history to try to understand my
  *own* beliefs, thought patterns, from the past and drawing my
  straight lines and contrast from the past to the present, to
  improve my future self.

References

  Visible links
  1. https://soundcloud.com/kenneth-udut/snowflake-song-kenneth-udut-age-7