The challenge for the future is not a technological one, its a human one. When peak efficiency has been reached and all jobs have been taken by robots, millions of people will simply revolt and overthrow their governments and manufacturers. Or millions of people will sit indoors all day, take their soma, while receiving a universal basic income to pay for everything to be delivered to their government provided homes. With no function in society there will be literally nothing to be done by people. Humanity will bring about its own exitiction through self imposed obsolescence.