>>10936466TL;DR, many people think when we interact with particles, its either directly a particle or wave or wave probability for some. The experiment merely shows that particles are never always particles nor always waves and they're always in flux regardless of whether or not its been observed. At any point in time, this can be seen as either wave or particle depending on the experiment thus showing the fluid nature of the "particles."
Copenhagen's interpetation is wave collapses once its observed. Obviously it doesn't because if we change the observation location, the supposedly "collapsed" wave re-emerges back as a wave.
We all knew COPEnhagen was wrong, even if it was "simple."