In terms of emulation, the resolution is currently good enough to identify molecules communicating across synapses. This enables an estimate of synapse strengths as well as a full wiring diagram of physical nerve shape. There are emulators for the electrical interactions of these systems. Also our brains are robust enough that significant brain damage and major chemical alteration (ecstasy etc.) are recoverable from, so if anything brains are much more robust than electronics. AI, in contrast, has real difficulty achieving anything but very specific problem areas which rarely generalise. For example, we cannot get a robot to walk and run in a robust way (BigDog is a start but it will be a while before its doing martial arts), we can't create a face recognition algorithm that matches human performance. We can't even make a robotic arm that can dynamically stabilise an arbitrary weight (i.e. pick up a general object reliably). All our learning algorithms have human tweaked parameters to achieve good results and hardly any of them can perform online learning beyond the constrained manually fed training data used to construct them. As a result there are very few commercial applications of AI that operate unaided (i.e. not as a specific tool equivalent to a word processor ). I would love to imagine otherwise, but I don't understand where the confidence in AI performance is coming from. Does anyone even have a set of partial Turing-test like steps that might lead to an AI (dangerous or otherwise).