My naive understanding is that some of it is because if you follow an object on the screen with your eyes, it gets motion blurred on your retina as it stays sti

My naive understanding is that some of it is because if you follow an object on the screen with your eyes, it gets motion blurred on your retina as it stays still for ~1/30 s on the screen while your eyeball moves. It is possible to improve on this without increasing the framerate with strobing the backlight/black frame insertion.