Yes 30fps has less information than 60fps, but I thought you were saying above that we can't perceive it. The whole point of the argument is that removing every

Yes 30fps has less information than 60fps, but I thought you were saying above that we can't perceive it. The whole point of the argument is that removing every other frame (and thereby doubling the viewing time of the shown frame) is perceptible. A game running at 60fps is doing exactly that: rendering twice as much information and showing it to you. And it's all relative… The argument is that 30fps is perfectly smooth until you see it side by side with 60fps.