The Sweet Spot follows Julian, a high-level "human optimizer" in Silicon Valley who makes a career out of finding the precise limit of human productivity. He is hired by the biotech giant Aethelgard to "fix" a crumbling corporate culture where the staff is burning out at an alarming rate. Julian’s philosophy is built on the "calculus of friction," using tactical resets—like sensory shocks and forced play—to keep workers from hitting a total mental collapse.