I can formulate the problem as follows: Assume that the vacuum is multidimensional excitable medium. We want to prove or reject this statement. The simplest way to reject is to find any fact (phenomenon or property of the world) which contradicts the assumption. I can assume some consequences which follows from the assumption and which can be disproved. 1) According to assumption photons can be described as autowaves which are in parametric resonance with oscillations of the medium. Such autowaves move along strait line with speed determined by properties of the medium. This implies that in the medium there should be some global “oscillating field” with which parametric resonance is possible. 2) On the other hand, elementary particles can be considered as multidimensional whirlwinds (autosolitons) in this medium. Such autosolitons are not in resonance with global oscillating field, that’s why they have rest mass. 3) Quantification may mean prohibition of autowaves (autosolitons) for which frequency of rotation is not divisible by (or multiple of?) frequency of ‘main’ oscillation field. Unfortunately, my knowledge does not allow me to prove or disprove these assumptions. Can anybody help me?