An artificial-intelligence algorithm that discovers its own way to learn achieves state-of-the-art performance, including on some tasks it had never encountered before. Joel Lehman is at Lila Sciences ...

The LinkedIn algorithm can feel like a mysterious gatekeeper, deciding which posts reach only a few connections and which break free into wider feeds. For professionals, creators, and brands, ...

The original version of this story appeared in Quanta Magazine. Imagine a town with two widget merchants. Customers prefer cheaper widgets, so the merchants must compete to set the lowest price.