"Before a faculty meeting, talking again with the expert on guppy menopause. What do biologists make of the question, Does color exist? I ask. Duh, he says. A male guppy looking for a mate doesn’t worry about whether color exists, he says. A male guppy only cares about being orange, in order to attract one. But can it really be said that the guppy cares about being orange? I ask. No, he admits. The male guppy simply is orange. Why orange? I ask. He shrugs. In the face of some questions, he says, biologists can only vacate the field."