Identifying Perceptually Indistinguishable Objects: Is That the Same One You Saw Before?

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We are investigating a simulated cognitive robot that, when it sees an object perceptually indistinguishable from one it has seen before, will use reasoning to decide if they are two different objects or the same object perceived twice. We are currently conducting experiments with human subjects to determine what strategies they use to perform this task and how well they perform it.