[cynusx]

My point is that there is a difference between giving an estimation of time and a commitment to deliver over a certain time. The parent assumes that just giving the estimate is the same as making the commitment.

The distinction between hard and soft deadlines is not relevant to my argument.

[Scarblac]

Theoretically, a perfect estimate means you'll be under it 50% of the time and over it 50% of the time. No bias.

Still management definitely feels something has gone wrong when you say at least half the projects will be over estimate.