That was one of the things that burned us once we finally got our task estimates accurate. Most tasks would be finished in about the time estimated, but one wou

That was one of the things that burned us once we finally got our task estimates accurate. Most tasks would be finished in about the time estimated, but one would be off by a factor of ten and blow the iteration. We discovered that for estimates to be accurate overall, most tasks need to be finished early. It's counterintuitive, but it's directly the result of that asymmetric distribution.