DeFi turned yield into something people could track instantly. But what DeFi made easy to see, it also made much harder to truly understand. A visible return is easy to admire, but much harder to evaluate without understanding the source. Price movement, position drift, and operational costs can all reduce the return that looked attractive at entry. A dashboard figure is often more useful as a signal than as a final answer. A strategy can look strong on the dashboard and still feel disappoint...