Maybe you've had this experience lately: You're riding high, feeling good about yet another record high in stocks, and then someone pops up on TV to kill the vibe. " It's an AI bubble ," they say. " It's like 1999 ." This actually happened to me last week (before President Trump's new tariff threat sent stocks tumbling on Friday) . I'd just read some convincing research arguing against a bubble, only to have my good mood ruined by a TV segment saying the opposite. Tired of the whiplash, I