Trying hard to understand the explanation of how looking at something can actually nudge it. Where do the electrons come from when we look at something?
Electrons interact with other electrons via the electromagnetic interaction, which is mediated by photons. If no photons are exchanged, no interaction take place (ignoring virtual photons and tunneling subtleties). So, essentially, if no photons are exchanged, nothing is seen, and if photons are exchanged, a disturbance in the motion of the seen (and the seer) takes place.
hmmmmm.....are you an auto mechanic?? ;)
works even without photons or any particle exchanged with a detector.
If you obeserve interference of a single photon with itself on a double slit it is strange enough - because it seems to contradict the fact that it is only ONE photon. But even more strange - if you detect which slit it DID NOT take - interference will brake down.
Either you know, where a particle is a distinct time OR you know what impulse it has (speed, mass and direction) that's a LAW not a desricption of the unfitness of scientist or technicians to measure more precise.
Seeing the interference defines wich impulse the photon had so you can't have that AND know where it was at a certain time - even if you have found that out by looking where it NOT has been leaving it only one possibility.
A more abstract explanation might be given by string theory.