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How to Optimize a Proxy for Learning
A reward function is a proxy for the thing that you actually care about and maybe it's much simpler but if you optimize that proxy like it's going to be fine. So we formalize that in this definition that says a pair of reward functions is hackable so like the proxy could hack the real reward function. When say we were here is like expected reward like expected some reward over time of a policy not like reward on the principal state right. And so the task is like good reward specification like having the perfect outer alignment so the good reward.