Herding Cats: Probability and Statistics of Project Work
Herding Cats: Probability and Statistics in Project Estimating
But when we hear we don't need to estimate to make decisions and no domain and context is provided, those making that conjecture haven't considered the domain or context either. They're either unaware of the probability and statistics projects or they're intentionally ignoring the probability and statistics of projects. Since they ignore these fundamental process of all non-trivial project, ignore their advice.