What is a personal example of sunk cost fallacy?
Finishing a book you dislike only because you already read half, despite better uses of your time.
Cognitive Biases
Sunk Cost Fallacy
The tendency to continue an endeavor because of already invested resources rather than future expected value.
The sunk cost fallacy keeps resources tied to losing paths because people struggle to detach from previous effort.
Core question
If we were starting fresh today, would we still choose this path?
Example
A team keeps funding a stale product line mainly because two years of development already went into it, even though future returns are poor.
How to apply
- 1.Separate historical spend from forward-looking value.
- 2.Create explicit kill criteria before projects start.
- 3.Review initiatives on expected future return only.
- 4.Normalize stopping decisions as strategic discipline.
Pitfalls
- ·Framing shutdown as failure rather than reallocation.
- ·Delaying exits to avoid short-term embarrassment.
- ·Letting identity get tied to a project outcome.
Questions
How can organizations avoid sunk cost traps?
Use stage-gates, pre-defined stop rules, and independent review so continuation requires fresh evidence.
Related
- Opportunity Cost
Every yes silently includes a no.
- Inversion
Solve forward problems by thinking backward.
- Planning Fallacy
We underestimate time, cost, and complexity.