Coaching practices for Bounds on Estimates

Describe almost anything you are working through and IX Coach finds the practices whose real-world fit is closest. For Bounds on Estimates, these are the strongest matches in the current practice library.

Does this sound like the set of challenges you might be facing?

• I land on a number and just go with it, never pausing to ask what’s the most it could possibly be or the least
• I build my estimate from my own optimistic story first and only glance at how long these things usually take at the very end as a sanity check
• I tend to blurt out one confident-sounding number and act like it’s solid, when honestly I have no business being that sure
• When I’d swear I know roughly where a number lands, the real answer is constantly outside the range I’d have bet on
• I’m late on something, I shrug, update the calendar, and immediately forget I ever thought it’d take half as long

Practices that may help

1. Sanity-check against known extremes
   Test your estimate against the clearly too-high and too-low bounds to calibrate your range.
   Fermi Estimation
2. Anchor on the base rate before adding inside-view details
   Start your forecast from the class median, then adjust — do not start from your narrative and adjust to the base rate.
   Reference Class Forecasting
3. Estimate in ranges, not point estimates
   Instead of "my estimate is 500," say "I think it is between 200 and 2000."
   Fermi Estimation
4. Practice confidence interval estimation
   Estimate ranges for factual quantities and check how often the true value falls within your range.
   Calibration Training
5. Log actual vs. estimated time for every task
   Build a personal database of your own estimation errors so you can calibrate future predictions.
   The Planning Fallacy — Why Your Estimates Are Always Wrong
6. Forecast a distribution, not a point estimate
   Represent your forecast as a range of likely outcomes, not a single predicted number.
   Reference Class Forecasting
7. Track your estimates and calibrate
   Compare your Fermi estimates to actual figures when you can, and use the gap to improve future estimates.
   Fermi Estimation
8. Use reference class forecasting for project estimates
   Estimate how long similar projects have taken historically before estimating your specific project.
   Base-Rate Neglect: Why We Ignore the Odds
9. 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
10. Update your forecast incrementally as new evidence arrives
    Treat your forecast as a probability that should shift with each new piece of evidence, not a commitment that survives contradiction.
    Reference Class Forecasting

Describe your situation in your own words to search the complete practice library.