⚡️Pure DCA uses the calendar as the sizing signal. The calendar contains almost no information. It works because it protects people from themselves, not because Tuesday the 15th is economically meaningful. A superior system uses information as the sizing signal. When price falls while the underlying mechanism survives, forward expected return rises. Buy more. When price rises far beyond what the mechanism currently supports, expected return compresses. Buy less. When the mechanism strengthens and price has not caught up, size up. When the mechanism dies, stop feeding it capital. The reason to maintain a permanent core position is equally important: models are fallible. Markets can reprice before the evidence becomes clean. Sitting entirely in cash while waiting for perfect confirmation can cost more than occasional bad entries. Continuous exposure captures the drift. Discretion captures the asymmetry. The mathematical north star is geometric growth, not winning percentage and not maximizing each individual trade. That naturally leads toward something resembling fractional Kelly sizing. Bigger edge earns bigger size. Greater uncertainty earns smaller size. Correlated bets share the same risk budget. Nothing receives enough capital that one model failure destroys the compounding engine. That last sentence is the whole game: The first obligation of capital is survival. The second is compounding. The third is aggression when reality offers asymmetry. Most investors reverse the order. They become aggressive when emotionally certain, preserve capital after the damage, and interrupt compounding whenever the market frightens them.