That guy is hilarious.[1][2][3] I'd like to know what would happen if the split beam was sent through fibre optics to Pluto and back, if the interference patter

That guy is hilarious.[1][2][3] I'd like to know what would happen if the split beam was sent through fibre optics to Pluto and back, if the interference pattern would persist instantly. [1] "It's a golden oldie..." [2] "... just to give the setup a nice high tech look and feel." [3] "The physics behind this is pretty hefty, and not, like, youtube video material."