Last Updated
：2025/12/01
sunk costs fallacy
Noun
Japanese Meaning
累積した回収不能な投資（埋没費用）を理由に、それ以上の投資を正当化してしまう認知バイアス。つまり、既に失った費用に固執して合理的な判断ができなくなる現象。
（ plural ）
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The phenomenon where somebody justifies an increased investment of money or other resources based on the cumulative prior investment (the sunk costs), despite new evidence suggesting that the cost of continuing now outweighs the expected benefit.
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sunk costs fallacy
The committee fell victim to the sunk costs fallacy, pouring more money into the project despite clear signs it would never succeed.
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The committee fell victim to the sunk costs fallacy, pouring more money into the project despite clear signs it would never succeed.
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