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by stefan_kendall3 4254 days ago
Don't guess at how long it takes to complete work. Plan what you think you need, and then do a week of stories. Based on your velocity, make a confidence interval of dates. Next week, do the same thing.

If they want a fixed date, take 60% of your velocity and you'll be pretty sure your math will work out to give you the project on time.

Anything not based on data is pulling numbers out of your ass, and it's hilariously disastrous every time.