We can only view a few discrete images per second, but that number is actually (if I remember right) in the single digits. However, when we see images at that speed, they look choppy. Higher framerate means it looks smoother to our eyes. There's some matter of debate over where the noticeable cap is, but it's not as low as you would think based on technical numbers with the eye. You can also notice changes that happen at an even faster "framerate," based on tests of picking up an individual dot, for example.thetoddo said:Maybe I'm just old and don't have the newfangled eyes this generation has, but given persistence of vision (which is how we actually create the concept of motion in the brain) isn't 60 FPS more than the human eye can detect?
Keep in mind, though, that while there are people who will swear they can tell the difference between 30, 60, 120 and even higher, there are also people who swear they can tell the difference between lossless and high quality lossy audio files, as well as vinyl and digital, who can't actually do it when tested. I'm not sure if any such test has actually been performed for gaming applications, but I'd be interested to know how many people could actually tell the difference (even in clinical conditions).