Ah good. Thank you for saying it. Yes, Random is a mathematical
  convenience that acts as a substitution for uncertainty.
  There's other formulations for uncertainty, but utilizing the
  mathematical construct (like you say, NOT physical construct) is
  _useful_ but not reality.

  It's a simulation of perfect gas trapped in a container if I
  remember right. Sometimes we forget random is an analogy, not a
  real thing.