Feature delivery
A checkout redesign might begin uphill while validating the flow, cross the hill after a prototype settles the interaction, and move downhill through implementation.
Technical work
A migration can remain uphill until the team proves the data path and rollback plan. Once those are known, execution work can move downhill honestly.
Cross-team projects
Use one scope per outcome rather than one per person. Hillchart teams and epics help keep a shared view while attention signals call out work needing a decision.