“if you know a lot about a field, you always know why it’s hard to disrupt, and you’ll be right until you’re not. But there’s an equal and opposite trap - if you know all the times that something people dismissed ended working, you can make the mistake of thinking that anything people dismiss will work. As Carl Sagan put it, people laughed at Einstein but they also laughed at Coco the Clown. More relevantly, Elon Musk made Tesla and self-landing rockets work, but there’s also the tunnels, hyperloop, the roofs, the roadster… "

Benedict Evans, from the free version of his newsletter