Let's consider the position x and momentum p of a free particle. [tex]\Delta\ x\Delta\ p\geq \hbar/2[/tex] so, if [tex]\Delta \ x[/tex] is little enough, [tex]\Delta \ p[/tex] is big enough. The fact [tex]\Delta \ p[/tex] is big implies that we cannot say the momentum conservation law is valid anylonger. But: space is homogeneus --> momentum conservation, non conservation of momentum --> space is not homogeneus So, for [tex]\Delta \ x[/tex] very little, that is, considering space at very small distances, space itself must be non-homogeneus. Consider that this is a very rough reasoning with no pretence at all. Can it have any meaning?