Is Copenhagen or Many Worlds true? An experiment. What? Yes.

Link post

If this paper is right, an experiment should be possible.

Building it also doesn’t seem that hard to do technically, so I think it could be interesting to watch in the coming months/​years.

If Many Worlds dies, we would seem to have a perpetual motion machine of the second kind. But if the second law of thermodynamics prevails, Copenhagen should provably be wrong.

All, if this paper is right. Does somebody find a mistake?