2 min lesson
Experimentation grilling
Explain the order in "Experimentation grilling", then say how you would verify the result.
Step 1 of 3
This round is adversarial by design. You'll propose an A/B, then the interviewer changes the rules - “you can't randomize this one” - and probes every assumption. The grade is method-fit and intellectual honesty, not whether you've memorized a test.