This is Sources by Alex Heath, a newsletter about AI and the tech industry, syndicated just for The Verge subscribers once a week.Building humanoid robots is Meta’s next “AR size bet,” a top executive told me recently. That suggests the company plans to spend billions of dollars on the effort.During a recent conversation at Meta’s headquarters, CTO Andrew Bosworth said he stood up a robotics “research effort” earlier this year at the direction of CEO Mark Zuckerberg. The team’s existence has bee...