Right, using an A7 in a Macbook would be totally crazy. The idea is that Apple might create an A8 that's about as fast as the current Macbook Air and use that.

Right, using an A7 in a Macbook would be totally crazy. The idea is that Apple might create an A8 that's about as fast as the current Macbook Air and use that. Getting as much performance increase going from A7 -> A8 as they did going A6 -> A7 strikes me as implausible, and it would probably be a bad idea to switch architectures anyways. But it's not totally crazy.