Ah, no, you’re right. I mis-spoke (mis-typed?).
Shot at 24 FPS, animated at much lower. However, my point about in-betweens still stands.
Also, humans can actually recognize up to 60 fps. Anything past that is negligible. 24 fps was chosen for film because it had the best ratio between quality and cost. Video is 30 fps and some new films (Like the Hobbit) are being shot at even higher.