The blue and gold are my high school alma mater's colors.  Sorry, no kitchen
probe.

Lessons learned:

- Higher order polynomials are very sensitive to floating point error.  Use
  isosurfaces instead.

- Isosurfaces are slow.  Use higher order polynomials instead.

- Counterintuitively, applying split_union off to the entire object slowed
  down rendering by an order of magnitude.

- Applying split_union off to Round_Box_Union and Round_Cylinder_Union (and
  to similar custom-written macros) cut rendering times in half.

- Area_light can be interminable.  This image was first rendered without
  area lights.  The shadows of the handle and reflective sphere were done
  in partial renders, then patched into the main image.

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