useless class? Unless we get cheap androids equivalent to the functionality of ones in Humans, we're nowhere near that.
Silicon Valley, that high tech place that leads the way... I would bet good money is every day full of... domestic servants. Cleaners, cooks, gardening services, nannies -- and builders. They might live 20 miles away, but their job is there with the rich.
And guess what? Who collects the rubbish? Who transports it, sorts it into recycling, maintains the lorry, reviews the safety measures & teaches the garbage collectors what safety measures to follow. Real people.
Diagnosing patients? But who knows how to deliver patient-centred care? Not a robot.
Growing crops? But who reviews the world commodity markets & decides what the best crops are to plant next year, and decides which software to use to make that decision, repairs the vehicles, treats the livestock with cheapest materials, negotiates a good deal on hiring equipment or swapping labour with a neighbour.
I was pondering whether robots could take over in mining activities underground, though. Could save a lot of lives.