A quantum Santa could deliver presents to every house simultaneously if nothing observed his passage. On the other hand, at some point the wave function will collapse, like say when people check what presents are under the tree. When the wave function collapses, the probabilities all go away and there’s a single answer, so he could deliver presents to one and only one house.
Yes, but no.
A quantum Santa could deliver presents to every house simultaneously if nothing observed his passage. On the other hand, at some point the wave function will collapse, like say when people check what presents are under the tree. When the wave function collapses, the probabilities all go away and there’s a single answer, so he could deliver presents to one and only one house.