3 ms·Estimation is not impossible. However, 100% confidence in your estimates is impossible.by je42 10y agoEstimation is not impossible. However, 100% confidence in your estimates is impossible.Leszek 10y ago100% confidence in any estimate is impossible, that's what makes it an estimate.je42 10y agoExactly, but if you communicate it to a "standard" manager/boss it usually becomes a deadline.