It's probably a case of me not knowing what I don't know, but I've never understood what the big deal with 'observation' is in QM.
I dabble a lot in electronics and I'm painfully aware of how measurements affect a circuit - try to measure current and you introduce a voltage drop, stick a probe somewhere and you add an antenna, add capacitance, etc.
So to me when trying to measure anything it seems so blatantly obvious that it has to change the outcome - you will interact in some way with the system to get any information out, and this will change the tracejctory, energy, momentum or whatever of the particles.
So to me when trying to measure anything it seems so blatantly obvious that it has to change the outcome - you will interact in some way with the system to get any information out, and this will change the tracejctory, energy, momentum or whatever of the particles.
I mean is that it? That's the mystery?