I don't, he gives them an opportunity to waste his 5 minutes arguing definitions that he could instead use to make other points, which are far more damning. You can even make the same point in your question, but using both your term and theirs.

He's talking to an economist, so you argue against her with "did any of your analysis of the economic outcomes consider the opportunity cost of the lost income from the killed baby, fetus?"

I don't, he gives them an opportunity to waste his 5 minutes arguing definitions that he could instead use to make other points, which are far more damning. He's talking to an economic, you argue against her with "did any of your analysis of the economic outcomes consider the opportunity cost of the lost income from the killed baby, fetus?"

I don't, he gives them an opportunity to waste his 5 minutes arguing definitions that he could instead use to make the actual point, which is far more damning.