The Sunk-Cost Escape
Ask not what you have already invested, but what you would invest starting fresh.
The Sunk-Cost Escape is a framework for overcoming the psychological bias that keeps people trapped in losing propositions simply because they have already invested time, money, or energy. McKeown names sunk-cost bias as one of the most powerful forces preventing people from eliminating nonessential commitments from their lives.
The core technique is a simple question reframe: instead of asking 'How much have I already invested in this?' ask 'If I were not already invested, how much would I invest now?' Applied to possessions, the parallel question is: 'If I did not already own this, how much would I spend to buy it?' This question neutralizes the emotional attachment to past investment and forces an honest evaluation of current value.
McKeown illustrates the principle with the Concorde jet, which lost money for four decades while the British and French governments kept investing because they could not bear to waste their previous billion-dollar investment. He also tells the story of Henry Gribbohm, who spent his entire life savings of $2,600 at a carnival game trying to win an Xbox Kinect, unable to walk away because of what he had already spent.
- Past investment is irrelevant to future value and should never be the primary reason to continue any commitment.
- Asking what you would invest if starting fresh today neutralizes the emotional weight of prior sunk costs.
- The inability to walk away from a losing position multiplies the total loss by converting it from a fixed cost into an ongoing drain.
- Attachment to past investment is an identity defense mechanism disguised as rational financial reasoning.
- Each additional investment in a sunk cost should be evaluated only on its own expected forward return.
- Identify Your Concorde ProjectsAudit your current commitments and ask which ones you are continuing primarily because of what you have already invested rather than because of what you expect to gain going forward. These are your sunk-cost traps.
- Apply the Zero-Based DecisionFor each suspect commitment, ask: 'If I were not already invested, would I choose to start this now? If I did not already own this, would I buy it today?' Let the honest answer guide you, not the emotional weight of past investment.
- Get a Neutral Second OpinionSunk-cost bias is extremely difficult to overcome alone because the emotional attachment clouds judgment. Share the situation with someone who has no investment in the outcome and ask for their honest assessment of whether continuing makes sense.
- Cut Your Losses and RedirectOnce you decide to uncommit, do it cleanly and redirect the freed resources toward something with genuine forward value. The pain of writing off a sunk cost is real but temporary; the ongoing drain of a bad commitment is far worse.
The British and French governments invested over a billion dollars developing the Concorde jet. Despite knowing early on that it could never be profitable due to limited seating, few orders, and high production costs, they continued investing for over four decades.
The Sunk-Cost Escape is a framework for overcoming the psychological bias that keeps people trapped in losing propositions simply because they have already invested time, money, or energy. McKeown names sunk-cost bias as one of the most powerful forces preventing people from eliminating nonessential commitments from their lives.
The core technique is a simple question reframe: instead of asking 'How much have I already invested in this?' ask 'If I were not already invested, how much would I inv