Your question is Validating Design Hypotheses Early. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Tell me about a time you partnered closely with researchers to validate a design hypothesis before moving into high-fidelity work. How did you decide what to test, what evidence was enough, and how that changed your design direction?