Difficulty: Easy
Correct Answer: Incorrect
Explanation:
Introduction / Context:Design rarely proceeds in a perfect straight line. Iteration allows teams to refine assumptions, correct errors, and incorporate feedback.
Given Data / Assumptions:
Concept / Approach:Iterative loops reduce risk by moving learning earlier and spreading it across phases rather than deferring discovery.
Step-by-Step Solution:1) Define iteration: revisiting earlier stages to improve outcomes.2) Note triggers: test failures, cost spikes, manufacturability findings.3) Apply iteration to refine concepts and details.4) Conclude that “never necessary to return” is incorrect.
Verification / Alternative check:Stage-gate processes explicitly allow recycling gates to repeat work when criteria are not met.
Why Other Options Are Wrong:“Correct” ignores real-world practice. “Only in emergencies” and “Only for software UX” unduly restrict iteration.
Common Pitfalls:Confusing disciplined iteration with chaos; fearing schedule impact more than defect risk.
Final Answer:Incorrect
Discussion & Comments