Four weeks isn't arbitrary. It's the optimal length for meaningful work:
- 01.Long enough to build: You can create something real, tested, and deployed in 4 weeks.
- 02.Short enough to focus: No scope creep. No endless iterations. Ship and learn.
- 03.Fast enough to iterate: Wrong direction? Course-correct in the next sprint, not next quarter.
- 04.Visible enough to maintain momentum: Stakeholders see progress. Teams stay energized.