Frequent measurement of a quantum system slows its decay. A two-level system precesses with Rabi frequency Ω, but each measurement collapses the state. With N measurements per period, survival probability approaches 1 as N → ∞.
Psurvival(T) = [cos²(ΩT/2N)]N → 1 as N → ∞ | "A watched pot never boils"