1964.

Erik Voorhees (@ErikVoorhees)
"The most intelligent inhabitants of that future world won't be men or monkeys. They'll be machines—the remote descendants of today's computers. Now the present-day electronic brains are complete morons, but this will not be true in another generation. They will start to think, and eventually they will completely outthink their makers.

Is this depressing? I don't see why it should be. We superseded the Cro-Magnon and Neanderthal men, and we presume we're an improvement. I think we should regard it as a privilege to be stepping stones to higher things. I suspect that organic, or biological, evolution has about come to its end, and we're now at the beginning of inorganic, or mechanical, evolution, which will be thousands of times swifter."

— Arthur C. Clark 1964