Comment on "Beam-splitters don't have memory: a comment on "Event-based   corpuscular model for quantum optics experiments" by K.Michielsen et al."
  R. Ionicioiu in arXiv:1012.0647 claims that beam-splitters do not have memory. This is the unproved statement. From other side, such small quantum objects as molecules, atoms and even photons have memory, which is connected with the inequality of forward and reversed processes in quantum physics. 
V. A. Kuz'menko