Gravity is usually presented as the most familiar of nature’s forces, the quiet background pull that keeps feet on sidewalks ...

I’m a big fan of photography. I’ve been doing it for years, and I know my way around a camera. But I can’t even count how many times, mostly when I was younger, a random man—always a man—stopped me ...

Excerpted with permission from the publisher The Shortest History of AI‎,‎ Toby Walsh, published by Picador India.