At some level we do understand biological brains–we understand action potentials, synapses and some circuit networks. We understand neurotransmitters, plasticity, and signal transduction cascades. We even can look at the entire functional map of animal brains in real time as they behave. Unfortunately, the mapping function that goes from neuron to behavior or thought remains beyond us.
My question for my computer science friends is this: at what level do we understand how specific ‘neuron’ activations cause AI output that resembles a robot passing the Turing Test? I’m worried that it’s only marginally more than what we have for neurobiology and that’s why explainable AI doesn’t work.
Am I wrong?