We can liken this kind of agent to a barge attached to several tugboats that pull in different directions. Each tugboat corresponds to a hypothesis about the agent’s final value. The engine power of each tugboat corresponds to the associated hypothesis’s probability, and thus changes as new evidence comes in, producing adjustments in the barge’s direction of motion. The resultant force should move the barge along a trajectory that facilitates learning about the (implicit) final value while avoiding the shoals of irreversible destruction; and later, when the open sea of more definite knowledge
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