Accuracy of the timeline
The accuracy of the timeline will only be as acurate as the accuracy of the least acurate task estimate.
The time estimate part of project planning is a tricky thing. Generally there is some guessing involved. To keep us from falling short a good practice is to pad estimates to account for the unforeseeable. Project planners can’t just pad and pad. There is pressure from the other side to keep your estimates accurate and keep your timeline short. Time is money after all.
So how do we put enough time in the timeline to not fall short, and keep the timeline from getting too long and expensive? Well that is a dance that takes some practice to learn.
Just remember, when you pad your estimate to your project leader or get and estimate from someone on your project, that padding is necessary, and you should discuss it openly.
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