This diagram got me much closer to real life: The universe has a tax on deliberation. Rationality collapses into "just do things" quickly. In a live environment, thinking is not free; every extra second spent optimizing carries opportunity cost, the cost of delay. So while additional reflection has marginal benefits in an abstract, costless world, once you factor in delay, the net value of further thinking peaks—and then drops—quickly. Figure 2B captures this as a direct order with an exclamation mark; there is a moment when the right move is to "Stop thinking and act now!".