se issues in a way that doesn't do violence to
deeply held beliefs.  One is asking for agreement on the design of a
computational artifact - not realism vs nominalism, etc.  Newtonian vs
relativistic physics might be useful as an analogy.  Although one may
know that the universe operates differently in fundamental ways,
Newtonian physics solves the vast majority of problems encountered in
anything like ordinary experience (including space travel  - at least
the travel done to date).

A first attempt at this