Milorad Cavic: "I did touch the wall first" in Beijing

I'm also wondering how much of a time difference is perceptible. I could imagine that a 0.01 second difference in hands touching would look simultaneous to a land judge (if there wasn't flash photography). Movies are shot at 24 frames per second and look continuous to the human eye, thus we know the eye can't discern a difference of 1/24 = 0.04 seconds. I'd say anything under 0.1 seconds looks pretty much simultaneous to the human eye.

I'm also wondering how much of a time difference is perceptible. I could imagine that a 0.01 second difference in hands touching would look simultaneous to a land judge (if there wasn't flash photography). Movies are shot at 24 frames per second and look continuous to the human eye, thus we know the eye can't discern a difference of 1/24 = 0.04 seconds. I'd say anything under 0.1 seconds looks pretty much simultaneous to the human eye.