"Maybe you should just use a knife." That's one of the less charitable reactions to this latest Oreo Separators video from Wieden + Kennedy—part of a series in which inventors and technologists develop machines and tools that are much more complicated than a mere knife to separate Oreo cookies from their creme. (Yes, I know, what's even the point of doing that at all?) In this third video, a couple of guys from the London conceptual-art collective Dentaku do their best with a Ferris-wheel-style contraption that—well, to be honest, it's a disaster at first, though the guys do redeem themselves somewhat at the end. Our favorite is probably still the video with the toy scientists.