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Michael Wolfe's answer to Engineering Management: Why are software development task estimations regularly off by a factor of 2-3?

www.quora.com/Engineering-Management/Why-are-software-development-task-estimations-regularly-off-by-a-factor-of-2-3/answer/Michael-Wolfe

From the page

Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.

Let's take a hike on the coast from San Francisco to Los Angeles to visit our friends in Newport Beach. I'll whip out my map and draw our route down the coast: