Nvidia (NASDAQ: NVDA) stock has gone on an absolute tear, on both the hype around AI and the reality that it's going to sell a lot of its chips that are powering the AI revolution. Is the stock a rocket headed to the moon, or has it already gotten there and is coming back to earth? In this video, Motley Fool contributors Jason Hall and Jeff Santoro offer two reasons why waiting for the dip makes sense, and one reason why you might want to buy shares now.