I think this is the point in the computer's evolution where biology is moore (pun intended :-) ) closely replicated. Massively parallel processing will be the answer and 3D allows this to be done with a reduction in area. The human brain is billions of processors running at a few hertz with massively parallel connections between them. This is where we should be heading
Replay available now: A handful of emerging network technologies are competing to be the preferred wide-area connection for the Internet of Things. All claim lower costs and power use than cellular but none have wide deployment yet. Listen in as proponents of leading contenders make their case to be the metro or national IoT network of the future. Rick Merritt, EE Times Silicon Valley Bureau Chief, moderators this discussion. Join in and ask his guests questions.