Well-managed expectations are crucial to project success.
Managing the expectations of the project length is extremely important to ensure project success. When the expectations are managed and highlighted early in a project, the team is able to work creatively without the additional pressure of overhanging deadlines and late deliveries. The trade-off sliders are a way to tease what is important out of the product owner, and the cone of uncertainty helps ground the discussion. This activity can be used both for internal projects so management can be well informed, or used for external projects so that service providers and customers are in alignment.