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by adornedCupcake 1137 days ago
Here people discuss that for a chaotic system automatic differentiation will diverge. https://discourse.julialang.org/t/when-forwarddiff-ing-throu...

I'm trying to come up with a simple example. I think that for bunch of flying hard spheres in a box, any measurement that requires sufficiently time spaced samples of their positions will have trouble being differentiated.