Cost of Exploration

principle

Exploration should expand when mistakes are cheap and contract when they are costly. The price includes not only money, but also time, effort, and downside risk.

A mistake can be a reason to try more, not less—provided that getting it wrong is cheap.

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Price the mistake before the possibility

Exploration buys information: each unfamiliar option teaches you something about what is available. But that information has a price. When a failed attempt costs little, you can afford many trials and increase your chance of finding a better option. As the consequences of failure rise, the same search becomes harder to justify; relying on a proven choice preserves money, time, effort, or safety. The Explore-Exploit Tradeoff therefore cannot be settled by curiosity alone—the cost of being wrong changes which mode is rational.

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Cheap failure is not automatically useful

Low cost makes exploration affordable, but does not guarantee that further trials will teach you anything valuable. Conversely, expensive mistakes do not make a familiar option good; they merely strengthen the case for exploiting the best option you already know.

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Set a failure budget

Before trying an unfamiliar option tomorrow, write down the maximum money, time, effort, and downside you can lose. If that bounded failure is cheap, run the trial; if it is expensive, choose the strongest proven option instead.

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Episodes that teach this