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Reinforcement Learning

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20 Lessons I've Learned while being humbled by RL (Field notes for fellow Data/PM folks making the leap)

Jun 9, 2026

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21 min read

20 Lessons I've Learned while being humbled by RL (Field notes for fellow Data/PM folks making the leap)

What a handful of experiments has taught me about the pre-training bones of RL environments, rewards, verifiers, holdouts, and harnesses. I’ll share a future Part 2 that gets into optimizer rollouts and policy learning, once that’s done, kicking my a$$.

Adam Grenier
Adam Grenier

Context Drift

Context Drift is the field guide to how humans actually adopt AI, written by Adam Grenier who has been in the room, on the mat, and through the pivot more than once.

© 2026 Context Drift.
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