Hi I was day dreaming the other day when I realized how incomplete and vague the fundamental postulates of QM are, I mean what counts as an observation? For example simply being in the presence of a charged particle can be an observation, since (using a point particle for the sake of argument) then I can feel the electric force and deduce how far the particle is from me and which direction it must be in. If this were to be a proper observation, then by that logic every electron and proton observes every other one. Another problem I have is that the notion of an observation is not a very physically sound one, I can deduce many things without directly measuring them, for example I can deduce that everybody who will reply to this thread is on earth, however I did not go ahead and measure that. With this I can go ahead and put limitations on how accurately your momentums can be measured.