Spandrels certainly exist. But note the context of what X is in the quoted text:
“a chunk of complex purposeful functional circuitry X (e.g. an emotion)”
a chunk of complex purposeful functional circuitry cannot be a spandrel. There are edge cases that are perhaps hard to distinguish, but the complexity of a feature is a sign of its adaptiveness. Eyes can’t be spandrels. The immune system isn’t a spandrel. Even if we didn’t understand what they do, the very complexity and fragility of these systems necessitates that they are adaptive and were selected for (rather than just being byproducts of something else that was selected for).
Complex emotions (not specific emotional responses) fall under this category.
we have X because it increased inclusive genetic fitness, full stop.
if evolutionary psychologists actually believe this it is a good example of why they aren’t taken very seriously. what about spandrels?
Spandrels certainly exist. But note the context of what X is in the quoted text:
“a chunk of complex purposeful functional circuitry X (e.g. an emotion)”
a chunk of complex purposeful functional circuitry cannot be a spandrel. There are edge cases that are perhaps hard to distinguish, but the complexity of a feature is a sign of its adaptiveness. Eyes can’t be spandrels. The immune system isn’t a spandrel. Even if we didn’t understand what they do, the very complexity and fragility of these systems necessitates that they are adaptive and were selected for (rather than just being byproducts of something else that was selected for).
Complex emotions (not specific emotional responses) fall under this category.