  The "quantum-event / prime ideal in a category/ noncommutative-point"
alternative to "classical-event / commutative prime ideal/ point" is suggested.
  Ideals in additive categories, prime spectra and representation of quivers
are considered as mathematical tools appropriate to model quantum mechanics.
The space-time framework is to be reconstructed from the spectrum of the path
category of a quiver.
  The interference experiment is considered as an example.
