Just as Childhood's End (first theory) could be viewed as a prelude or explanation of many SF fictional universes (the "Overmind" is the Force in Star Wars, among others) the film AI could be a seen as a mythological version of the founding of The Culture -in particular the "panhumans" described as being abundant in the (well "our") galaxy and beyond. At the film's epilogue, all the humans had been killed as a result of a new Ice Age but the descendants (so to speak) of the film's "mechas" (intelligent androids) remain. It could be conceivable that a similar event actually happened in Earth's distant past. A race of hominids, perhaps unknown in the fossil record, invented and heavily utilised, artificial intelligence just before their civilisation was destroyed in an ice age. Of course, a few survivors could have left Earth in spaceships before this happened, but the main point is that the AIs which survived were able to crea...