I don't get it, gradient descend computation is super frequent, state/input changes all the time, you'd have to reset heat landscape very frequently, what's the

I don't get it, gradient descend computation is super frequent, state/input changes all the time, you'd have to reset heat landscape very frequently, what's the point? No way there is any potential speedup opportunity there, no? If anything you could probably do something with electromagnetic fields, their interference, possibly in 3d.