Real Requirements Quote by Derek Hatley
““These needs, then, are just as real as any other requirements; we refer to them here as required constraints or design constraints, and they are a very important part of the whole requirements set.””
About This Quote
Design constraints are legitimate requirements that shape a product’s architecture and functionality, not optional preferences.
In simple terms: Constraints are real requirements.
Key Takeaway
Treat constraints as essential design inputs.
Themes
requirements engineering
design constraints
system architecture
product development
stakeholder alignment
Mood
analytical
pragmatic
Type
statement
observation
When to use this quote
- defining product scope
- balancing features vs. limitations
- communicating with stakeholders
Key Concepts
constraint identification
requirements prioritization
design decision making
Practical Applications
- requirements documentation
- design review processes
Questions to Reflect On
- How do constraints influence design trade‑offs?
- What happens if constraints are ignored?
![“The point is best made by stating that not all systems are requirements-driven, at least, not driven by formal written requirements of the kind we have described so far [Rechtin 97]. As an example: A city is a people-made system, but (with a few notable exceptions) no one actually sits down and…” quote by Derek Hatley](https://sms4smile.com/quotes/img-quotes/137/derek-hatley-75451_natural-resources_the-point-is-best-made-by-stating-that-n_3069045.jpg)