OK, so my favorite man-with-a-hammer du jour is the “everyone does everything for selfish reasons” view of the world. If you give money to charity, you do it for the fuzzy feeling, not because you are altruistic.
That’s not a disagreement about the nature of the world, it’s a disagreement about the meaning of the word “altruistic”.
That’s not a disagreement about the nature of the world, it’s a disagreement about the meaning of the word “altruistic”.