What's really cool is that physicists have recently been able to realize experimentally some of the room changing operations in Hilbert's hotel, using quantum s

What's really cool is that physicists have recently been able to realize experimentally some of the room changing operations in Hilbert's hotel, using quantum systems: https://physics.aps.org/synopsis-for/10.1103/PhysRevLett.115.160505 https://physics.aps.org/synopsis-for/10.1103/PhysRevLett.115...