This is the reason why Feynman is considered a giant in physics and quantum mechanics
This video reminded me of the Danish astronomer Ole Rømer in 1676 had disproved Jason Lisle’s deceptive Anisotropic Synchrony Convention (ASC) way back in 1676. But a real astrophysicist with a PhD would know this. I don’t want to beat a dead horse 
since I’ve already gone over this in Why I Am Not A Young Earth Creationist anymore and Dissecting YEC – Science and Light (Part 4), but Rømer’s experiment was so much simpler.
Rømer’s experiment disproves Lisle’s deceptive idea that incoming light is instantaneous. In Rømer’s experiment there is no out going light so Rømer is only calculating one way light speed. The speed of incoming light from one of Jupiter’s moon.