I think that as the parts in a computer keep getting smaller & smaller, and the processing speed gets faster & faster...pretty soon you'll have something quite capable of replicating the way a human brain works. If it where to become self aware, which in theory is possible then we might be in a run for our money. Computers already control everything and literally can make themselves (and other machines). Just go check out a automotive plant. But We'll be OK if they put in Asimov's 3 rules of Robotics. Love that old story. Have to go now, my computer's telling me it's time for dinner.