For decades computer scientists have been struggling to design anartificial intelligence sophisticated enough that it could pass for a living being. The fruits of that labor so far are snarky chatbots and systems that can crunch large amounts of data and spit out factoids. Google began working on a new method of replicating neural networks using 1,000 computers tied together. Now, one of the researchers that helped Google do it has laid out the framework for an even better brain model that costs a fraction as much. The key to true AI might be the GPU.