[hef19898]

The mind set of working without planning and deadlines, caused by an inability of organisations to do so, is really troublesome. Using Agile as excuse is even worth.

[UK-AL]

There's 3 approaches.

Deadline & No Fixed Scope. Fixed Scope & No Deadline. Deadline & Fixed scope and padding appropriate to uncertainty to hedge risks.

All 3 are admissions you can't estimate accurately.