Hm, can't forget about the inputs/outputs to the system. If
   they're different, we're different. Did you know that no two
   people hear exactly the same? We can't; our ears are all shaped
   differently. For most practical purposes, it doesn't make much
   difference, but, still a difference. I was born 1/2 deaf; more
   than - one ear is tinny and can't hear anything and the other
   only goes up to 5000 hz. Yet, I have perfect pitch. I hear the
   world differently. My neuronal configuration was shaped by my
   inputs; it didn't come out of thin air. Even a copy would be
   different if it had different ears and would be a different
   person, whether digital or analog. - but that leads more into
   another question [1]Seedy Johnson posed again, which is still in
   my head.

   The key thing is: "as long as" and "exact". Strict standards
   there. Unless we reach the "as long as" "exact", the
   foundational material remains relevant.

References

   Visible links
   1. https://www.facebook.com/seedyjohnson?hc_location=ufi