I've done enough neural net stuff to know that noise can knock you out of local minima / local maxima. Well, not even neural nets... machine learning in general

I've done enough neural net stuff to know that noise can knock you out of local minima / local maxima. Well, not even neural nets... machine learning in general benefits. But there's a difference between noise that you can control (ie: on during training and you can increase/decrease at will) and noise that's fundamental to the system and uncontrollable. Still, since all neural nets show a resilience to a degree of noise, maybe that makes analog-circuits suddenly viable.