The Planning Fallacy
The Planning Fallacy is a book chapter by Roger Buehler, Dale Griffin, Johanna Peetz (2010 in its publication record; cited on IX Coach as 1994), published by Advances in Experimental Social Psychology. IX Coach's practice library cites it in 6 practices across 6 concepts; each one is listed below, so you can see exactly where this book chapter is put to use.
Where to find it
Practices on IX Coach that cite The Planning Fallacy
- Build in buffer
Add deliberate slack to estimates and schedules so reality doesn’t break the plan.
Essentialism, Made Practical
- Estimate conservatively and act on the conservative number
When uncertain, use a pessimistic estimate as your working assumption — not your best guess.
Margin of Safety
- Actively seek disconfirming cases
When researching base rates, specifically look for cases where things went badly — failure cases are underrepresented in natural memory.
The Outside View
- Estimating work in pomodoros
Forecast how many sprints a task will take, then compare to reality.
The Pomodoro Technique, Made Practical
- Buffer and overflow blocks
Schedule empty buffer time to absorb overruns and the unexpected.
Time Blocking, Made Practical
- Audit and renegotiate your commitments
Regularly review what you have agreed to and honestly eliminate what you cannot do.
Do It Tomorrow, Made Practical
How this page was checked
- The citation was matched to its Crossref record, and the title, authors and year above are taken from that record — not written by us.
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