If risk and uncertainties based on Event Chain Methodology are defined properly, the project schedule should be much more robust. Event Chain Methodology allows the manager to model projects with uncertainties in a much simpler manner. Most project managers actively create and update project schedules and risk lists. Event chain methodology allows the manager to combine both lists to provide a simple answer to the central question of project management - how long will the project take and how much will it cost if an event occurs.
Risk
Event Chains and Risk Mitigation