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- Customers know exactly what they want in advance and will not change their mind
- You know exactly what your customers want
- You know that users will have no concerns with your initial design
- Any feedback from users is either addressed in a subsequent project or not at all
- You’re working with fixed-price / fixed-bid contracts
- The project is very simple predictable or you’ve done it similar projects many times before
- You’re working with simple, fixed scope unchanging projects
- You anticipate only minor mistakes throughout the project
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