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BlueBrain is an ambitious project to model interconnected neurons with highly precise digital models. Between the "wet" work done to create accurate simulations and the programming, the scale of the task is beginning to look immense. A digital brain sometime soon? Not without major breakthroughs – "The human brain requires about 25 watts of electricity to operate. Markram estimates that simulating the brain on a supercomputer with existing microchips would generate an annual electrical bill of about $3 billion ."