Yes, but a smartphone has billions of microswitches and articulated features. The smallest feature of a fission core is about the same size as a smartphone. T

Yes, but a smartphone has billions of microswitches and articulated features. The smallest feature of a fission core is about the same size as a smartphone. The level of sophistication of the tooling needed is miles apart. If we were to start from scratch we could make a fission core long before we could make a smartphone.