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reality usually delivers results a little worse than the…

“reality usually delivers results a little worse than the 'worst-case scenario'. It's called the planning fallacy, and the best way to fix it is to ask how long things took the last time you tried them. That's called using the outside view instead of the inside view. But when you're doing something…” quote by Eliezer Yudkowsky
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““reality usually delivers results a little worse than the 'worst-case scenario'. It's called the planning fallacy, and the best way to fix it is to ask how long things took the last time you tried them. That's called using the outside view instead of the inside view. But when you're doing something new and can't do that, you just have to be really, really, really pessimistic. Like, so pessimistic that reality actually comes out better than you expected around as often and as much as it comes out worse. It's actually really hard to be so pessimistic that you stand a decent chance of undershooting real life.””

Eliezer Yudkowsky

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 causes optimism; using past data (outside view) improves estimates, but new tasks may need extreme pessimism.

In simple terms: Past experience helps predict future timelines, yet new projects are hard to gauge.

Key Takeaway

Use historical data to set realistic goals.

Themes

cognitive bias project planning optimism bias

Mood

analytical cautious

Type

psychology practical

When to use this quote

  • software development
  • construction projects
  • event planning

Key Concepts

outside view historical comparison risk assessment

Questions to Reflect On

  • How can you balance realistic estimates with motivation?
  • When is optimism beneficial?
A Different Perspective

Extreme pessimism can demotivate teams and waste resources.

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