"When a world famous physicist rushed to post groundbreaking pictures from the new James Webb Space Telescope of a distant planet, the first ever taken of it, people sat up and took notice. And by default anything such a person said is given great deference. You don’t expect someone like that to post something you later discover was a joke all along. But his approximately 92000 followers on Twitter learned that is exactly what it was. In this case it wasn’t really harmful as after an hour of teasing them all about Spanish charcuterie not existing anywhere but Earth, and...