True. However we know shockingly little of how neurons actually do computation. Everything a neuron does it does so with a combination of electrical and chemica

True. However we know shockingly little of how neurons actually do computation. Everything a neuron does it does so with a combination of electrical and chemical signals. This is why it's slow, but it also introduces considerable noise in the process. Also, because they're usually in some skull-like object, and because neurons are incredibly hard to culture, we simply lack the tools to observe them in their natural environment to the resolution you might want. Simple questions like how often a neural signal fails to cross a synapse in a brain are remarkable difficult to answer. Do we need to know how every neuron is connected to every other neuron in the brain to understand it? Even if we had such a map, would it be missing something so crucial as to be useless (for example how glia interact with the neuron)? Nobody can say for sure right now.