CONCEPT
Cranes, Not Skyhooks
Dennett's slogan for the methodological commitment to explaining intelligence by earned mechanisms — cranes that build from the ground up — rather than by unexplained miracles imported from above.
A skyhook, in Dennett's vocabulary, is any explanation that assumes the very capacity it needs to explain — calling in consciousness, meaning, or design from outside the natural order. A crane is an explanation that builds the capacity from simpler mechanisms that themselves could have arisen from still simpler ones, with no appeal to magic or pre-existing mind. Darwin's Dangerous Idea argued that natural selection was the first and greatest crane, and that the history of science has been the progressive replacement of skyhooks by cranes. For AI, the injunction is direct: if a system exhibits a capacity, the right question is what crane built it, not whether a skyhook authenticates it.
In The You On AI Field Guide
The distinction has been Dennett's sharpest rhetorical instrument for four decades. He used it to dispatch vitalism, Cartesian dualism, Searle's Chinese Room, Penrose's quantum consciousness, and every other proposal he considered an attempt to smuggle unearned magic into the explanation of