what is your go to root cause methodology

Have ONE crisp method you can say in 60 seconds. Recommended: 1) DEFINE the failure clearly (what exactly, when, under what conditions). 2) ISOLATE — change one variable at a time; gather data; don't change five things at once. 3) HYPOTHESIZE + TEST — form a hypothesis, then prove it with a measurement before acting on it. 4) FIX at the root, not the symptom. 5) VERIFY it holds over time and under stress. 6) DOCUMENT so it's reusable. The one-line frame: 'I assume my first hypothesis is probably wrong, so I let the data pick the root cause — and I don't stop at the symptom.' This is your Onto strength; own it confidently. The panel wants a repeatable, disciplined method — not 'I just know stuff.'