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The planning fallacy is that you make a plan, which is…

“The planning fallacy is that you make a plan, which is usually a best-case scenario. Then you assume that the outcome will follow your plan, even when you should know better.” quote by Daniel Kahneman
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“The planning fallacy is that you make a plan, which is usually a best-case scenario. Then you assume that the outcome will follow your plan, even when you should know better.”

Daniel Kahneman

About This Quote

This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.

The planning fallacy describes the tendency to underestimate task duration and overestimate success by assuming ideal conditions, ignoring past evidence.

In simple terms: People often plan too optimistically, ignoring realistic constraints.

Key Takeaway

Plan with realistic buffers.

Themes

cognitive bias optimism project management

Mood

analytical cautious

Type

cognitive practical

When to use this quote

  • business projects
  • personal goals
  • event planning
  • software development

Key Concepts

overconfidence risk assessment

Questions to Reflect On

  • How can you incorporate past project data into new plans?
  • What safeguards prevent overoptimistic forecasts?
A Different Perspective

Mitigating bias requires data and past experience.

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