This comes with the assumption that the first AI will be able to run at better than human levels on something like a raspbery pi. More realistically, it's going

This comes with the assumption that the first AI will be able to run at better than human levels on something like a raspbery pi. More realistically, it's going to have to run on an immense super computer, and even if it can marginally improve (marginal because a human level AI is no more likely to improve its own hardware than I am), it won't be able to just spread all over the world. It needs real physical hardware. That is, unless the reason we don't have AI is because we haven't put the pieces together correctly, and it really could work on minimal hardware.