> Going further backwards, the transistor (or a PNP junction) is the hardware level enabler of the IF statement. The action (switching) (..)

Back up a bit please! Analog computing is a thing. And it isn't even new - not by a long shot.

There are good reasons why practically all computing today is the digital kind. But electronic 'equivalents' of neural nets is one area where analog might make sense. Adding inputs can be as simple as a bunch of resistors + a transistor. Even on modern silicon nodes, that might be a more efficient setup than digital inputs, N-bit adders/multipliers etc. Not saying that's the case, and AI hardware should be based on analog circuitry. But it could be, and perhaps found to be practical.