2 min lesson
Timed practical-onsite simulation
Walk through "Timed practical-onsite simulation" in order, then name the proof that tells you it worked.
Step 1 of 2
The onsite decides the offer and you cannot rehearse it by reading about it. You rehearse it by sitting down with a real RL/eval/grader problem, a hard time box and Cursor open, then operating exactly as you would on the day.
Pick something small and real: build a grader that separates a passing edit from a reward-hacked stub or write a GRPO advantage and unit-test it on a known batch. Give yourself a fixed block, 2 to 3 hours and a notebook for one running log.
Interactive diagram. Step through it with the Next and Previous controls below, or Tab to a region to read its detail.
The verify-before-you-trust step is the gate a real reviewer is reading for.