If an obscure 1980s paradox is any guide, AI may be about to hit a huge tipping point

There’s an old joke among economists that goes like this: “You can see the computer age everywhere but in the productivity statistics.” I didn’t say it was a funny joke. But when labor economist Robert Solow originally wrote those words in 1987, they were certainly true. Personal computers, corporate mainframes, and the first vestiges of the modern internet were all anyone could talk about.  Yet productivity wasn’t budging. These whizzy technologies, in short, weren’t earning an...