Thirty Slices/Twenty-Four Days: How Christmas Was Saved by Abandoning Estimation(perladvent.org)
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Thirty Slices/Twenty-Four Days: How Christmas Was Saved by Abandoning Estimation
https://perladvent.org/2025/2025-12-13.html
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On day 13 of The Perl Advent Calendar Chris Prather tells how Santa's workshop rebuilt their NaughtyNice system in 24 days using "No Estimates"—breaking work into daily slices and measuring throughput instead of guessing timelines.