I don't quite understand brain simulation. Most article talks about how neuron works, how they are connected. It seems I can write a simulation easily. https://

I don't quite understand brain simulation. Most article talks about how neuron works, how they are connected. It seems I can write a simulation easily. https://medium.com/@bennashman/modeling-your-brain-on-a-computer-with-computational-neuroscience-57596c919c70 https://medium.com/@bennashman/modeling-your-brain-on-a-comp... What I don't get is, the interconnected neurons don't seem to be differentiable. How do they learn? How to provided feed back to the system? How to train them like we do to ANN?