One persistent criticism of Silicon Valley is that it no longer works on big, world-changing ideas. Every few months, a dumb start-up will make the news — most recently the one selling a $700 juicer — and folks outside the tech industry will begin singing I-told-you-sos.
But don’t be fooled by expensive juice. The idea that Silicon Valley no longer funds big things isn’t just wrong, but also obtuse and fairly dangerous. Look at the cars, the rockets, the internet-beaming balloons and gliders, the voice assistants, drones, augmented and virtual reality devices, and every permutation of artificial intelligence (AI) you’ve ever