Tesla and SpaceX CEO Elon Musk and Meta Platforms Inc.’s AI chief Yann LeCun’s public spat that re-started on Monday, ignited once again the following day when the tech behemoths clashed over the definition of science. What Happened: On Tuesday, LeCun responded to a user on X, formerly Twitter, stating, “Well, if it’s not published, it’s definitely not science.” Musk fired back, saying “This is one of the dumbest things anyone has ever said.” See Also: Elon Musk, Who Acquired Twitter For $44B, Says Social Media Is Bad For Kids: ‘They’re Being Programmed By A Dopamine-Maximizing AI’** LeCun fur…