Hi all, Just did a little bit of (layperson) reading about Anderson localization and disorder in crystal structures. Here's my question: shouldn't all matter contribute to 'restricting' the wave function of e.g., an electron, whether it's in a crystal structure or not? That is, what's specific to a finite disordered lattice and Anderson localization? That is, shouldn't things like an electron moving through water molecules (highly disordered) force localization of the electron wave function in a similar fashion? As an extreme example, if you consider e.g., that single electron, and all the matter in, say, the observable universe, shouldn't the interference of all of the wave functions together effectively force the localization of the electron to some very small region? (since the matter distribution has reasonably large entropy) Or is it that the interference effectively 'averages' out in some way? Thanks - sorry if the questions above are not very 'crisp'.