I'm hoping that analog computing will come back in the form of photonic analog computing. This would be more powerful than quantum digital computing (you know the things that people are wasting time on).

Fun fact, with analog computing, one could imagine achieving Real Computation (https://en.wikipedia.org/wiki/Real_computation) which is above and beyond Turing. completeness.

Note the fun sentence "If real computation were physically realizable, one could use it to solve NP-complete problems, and even #P-complete problems, in polynomial time. ".

We are on a wrong evolutionary branch of computing. Bits are lame-o-rama, whereas differentiable signals are pure unadulterated flavortown.