We are deeply gratified by this exchange with Professors John Darley, Paul Robinson, Owen Jones, and Robert Kurzban. We have benefited a great deal from their research, and this encounter only adds to our appreciation. Their work has always been exceptional in its devotion to empirical exploration and experimentation. We are grateful to them for taking the time to share their thoughts with us and with the readers of this journal. In responding, we are unsurprised to find that we are in agreement with quite a bit of what they have to say.

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