Uncertainty: A state of knowledge – measured by probability – represented by aleatory and epistemic elements.
NASA-SP-2009-569, Bayesian Inference for NASA Probabilistic Risk and Reliability Analysis
Managing in the presence of uncertainty is what successful project managers and their project management methods do. Denying there is uncertainty, failing to plan for this uncertainty, and employing tools and processes to identify and manage in the presence of this uncertainty leads to disappoint for all.
