It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring. - Carl Sagan
All we do, everything we encounter, all actions taken on any project ever executes, we encounter uncertainty. Reducible uncertainty (Epistemic) and irreducible uncertainty (Aleatory).
No credible decision can be made in the presence of these uncertainties without making estimates of the outcomes of that decision.
The Illusion that credible Decisions can be in the presence of uncertainty while spending other people's money is delusional.