Yann LeCun, chief AI scientist at Meta Platforms Inc., at the VivaTech conference in Paris, France, on Wednesday, May 22, 2024.Meta's former chief AI scientist, Yann Lecun, has called its 29-year-old AI boss "inexperienced," and warned of a staff exodus from the company.Alexander Wang, the billionaire co-founder of Scale AI, joined Meta as its chief AI officer in 2025 after the tech giant bought a 49% stake in his startup. His hiring came amid an intensifying AI talent war, in which Meta reportedly offered ...