[achompas]

I think about this constantly.

Not to sound like I walked uphill in both directions back in my day or something, but I remember building models in numpy without pandas. It was tedious -- and that's just a nice API wrapping ndarrays!

[bhrgunatha]

> Not to sound like I walked uphill in both directions back in my day

Local minima?

[YeGoblynQueenne]

Most likely, gradient descent with momentum.

[farazbabar]

Oh boy, that and perturbation.