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

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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?