We may be able to achieve human-level processing power on current supercomputers, but it is not clear how to build (or gwireh) the complex networks or how the networks should be connected to the sensors and motor-control devices, and manually designing and building these is beyond the capabilities of humans. It is unlikely that traditional artificial intelligence approaches will lead to truly intelligent machines. Rule-based systems and cognitive architectures require humans to program the rules, and this process is not scalable to billions of rules. The machines will need to learn on their own by experimenting in the real world. Human-level intelligence (and possibly consciousness) will most likely be produced as an emergent property of an embedded learning machine.