How to Avoid the Sunk Cost Fallacy: Why Quitting Is for Winners

This article is an excerpt from the Shortform book guide to "The Voltage Effect" by John A. List. Shortform has the world's best summaries and analyses of books you should be reading.

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When should you give up on an idea or a project? What’s the best way to identify diminishing returns?

Sometimes it’s hard to give up, especially when you’ve invested so much and you don’t want to be a quitter. But, sometimes cutting your losses and moving on is the best course of action. In The Voltage Effect, economist John A. List explains why, sometimes, quitting is for winners.

Continue reading to learn how to avoid the sunk cost fallacy and stop wasting valuable resources.

How to Avoid the Sunk Cost Fallacy

As you scale your ideas up, List advises that you take steps to avoid succumbing to the sunk cost fallacy. The sunk cost fallacy is the human tendency to invest additional time and resources into failing projects in an attempt to salvage resources that have already been invested in the project. In these situations, you should pull out of the failing project, as doing so minimizes your losses and maximizes the time and resources you’ll be able to invest in more fruitful projects. As an economist, List offers this advice on how to avoid the sunk cost fallacy: Give up. He goes on to explain why quitting is for winners when they see the writing on the wall.

(Shortform note: While List offers separate sections on identifying diminishing returns and giving up optimally, we’ve merged them to condense the strategies for avoiding the sunk cost fallacy.)

To prioritize your best ideas, you need to recognize when an idea isn’t scaling and give up on that idea as quickly as possible. When you’re able to quickly give up on failing ideas, you minimize your losses and free up resources so that you can successfully pivot to another project.

(Shortform note: List’s recommendation to abandon struggling projects is primarily aimed at executives and other organizational leaders who are tasked with protecting and efficiently directing their organization’s resources. However, if you’re a project manager, it may be in your best interest to try to revitalize your projects, instead of giving up on them. Experts note that your reputation as a project manager is often directly tied to the success or failure of projects you manage. You can boost your reputation and increase your chances of advancement by learning to turn around floundering projects.)

When you think it might be time to give up on an idea, List recommends that you consider alternative ways you could spend your time and resources. For example, if you think it may be time to pull the plug on a specific product feature, ask yourself what else you could do with the resources currently allocated to the project. If there are other ideas or features that seem more lucrative, exciting, or scalable, it’s probably time to give up and move on.

(Shortform note: As Dobelli notes in The Art of Thinking Clearly, overcoming the sunk cost fallacy can be difficult because it inherently involves the uncomfortable task of admitting your mistakes. Instead, those who fall victim to the sunk cost fallacy continue to invest in their failing enterprises, hoping that they’ll eventually become successful, in which case their decisions would be retroactively vindicated.)

How to Avoid the Sunk Cost Fallacy: Why Quitting Is for Winners

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Here's what you'll find in our full The Voltage Effect summary:

  • How to take ideas from the small scale to the big stage
  • The red flags that signal you may have trouble scaling up
  • Strategies designed to increase your idea’s chances of success

Elizabeth Whitworth

Elizabeth has a lifelong love of books. She devours nonfiction, especially in the areas of history, theology, and philosophy. A switch to audiobooks has kindled her enjoyment of well-narrated fiction, particularly Victorian and early 20th-century works. She appreciates idea-driven books—and a classic murder mystery now and then. Elizabeth has a Substack and is writing a book about what the Bible says about death and hell.

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