Albert Edwards, the outspoken Global Strategist at Société Générale—a figure who even refers to himself as a “perma bear”—is certain that the current U.S. equity market, driven largely by high-flying tech and AI, is experiencing a dangerous bubble. (Société Générale, to be clear, does not hold the view that U.S. stocks or AI stocks are in a bubble, noting that Edwards is employed as the in-house alternative view.) While history often repeats itself, Edwards warned recently that the circumstances surrounding this cycle’s inevitable collapse are fundamentally different, potentially leading to a deeper and more painful reckoning for the economy and the average investor.

“I think there’s a bubble but there again I always think there’s a bubble,” Edwards told Bloomberg’s Merryn Somerset Webb in a recent appearance on her podcast Merryn Talks Money, noting that during each cycle, there is always a “very plausible narrative, very compelling.” However, he was unwavering in his conclusion: “it will end in tears, that much I’m sure of.”

Edwards told Fortune in an interview that previous theories about a bubble were “very convincing in 1999 and early 2000, they were very convincing in 2006-2007.” Each time, he said, the “surge in the market was so relentless” that he just stopped talking about bubbles, “because clients get pissed off with you repeating the same thing over and over again and being wrong,” only to change their tune after the bubble bursts. “Generally, when you’re gripped by a bubble, people just don’t want to listen because they’re making so much money.”