Jack Altman, partner at Benchmark and former founder of Lattice, posted that uncertainty defines the current AI cycle. He wrote that no one knows what they are talking about and that even very smart and plugged-in people keep reversing their opinions then reversing them again three months later. The tweet comes from his public account where he also hosts the Uncapped podcast. No examples, specific predictions, or corroborating posts appear in the visible conversation. The statement stands as Altman's observation without additional reported context or replies.