And here I thought it was a normal brain... (Or at least our PC's Brain... Lets face it, our computers by themselves aren't all that bright... Killing Skynet would probably be about as easy as crippling the internet... Judgement day would probably be less T-800s going on a massive killing spree, and more Person of interest style manipulation of corrupt bureaucrats with bribes, and blackmail to create its own cult/shadow government to do it's bidding. (Because lets face it, trying to nuke us off the planet would be to the machines like us trying to get rid of head-lice with napalm, and a self aware AI would probably be one with the internet... Blowing up servers and infrastructure would be like lobotomizing itself.)