What is the oldest profession?

A physician, an engineer, and an attorney were discussing who among them belonged to the oldest of the three professions represented. The physician said, "Remember, on the sixth day God took a rib from Adam and fashioned Eve, making him the first surgeon. Therefore, medicine is the oldest profession."
The engineer replied, "But, before that, God created the heavens and earth from chaos and confusion, and thus he was the first engineer. Therefore, engineering is an older profession than medicine."
Then, the lawyer spoke up. "Yes," he said, "But who do you think created all of the chaos and confusion?"

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