A four-year-old has seen more of the world than ChatGPT. Yann LeCun is betting $1bn on that

Yann LeCun is not a natural contrarian, but he is playing one right now. The man often called a godfather of AI built the convolutional neural network in the late 1980s. That design still powers phone cameras, medical scans, and driver-assistance systems. He then spent 12 years as Meta’s chief AI…