Would it be accurate to say that an adaptive trait is one selected by some evolutionary pressure, while a non-adaptive trait is just coincidence?
How could you tell if this trait was just very broad in it’s application, say just the instinct to squeeze things, verses something completely coincidental?
Yeah, that’s exactly right.
As for the second part, I’m not sure how to answer. Squeezing the partner is without a doubt adaptive, but squeezing anything that is roughly the same shape is a byproduct with no (strong) evolutionary pressure. Now, the question is whether functional necrophilia is adaptive or just a byproduct is very difficult to answer, but I lean towards byproduct.
Would it be accurate to say that an adaptive trait is one selected by some evolutionary pressure, while a non-adaptive trait is just coincidence?
How could you tell if this trait was just very broad in it’s application, say just the instinct to squeeze things, verses something completely coincidental?
Yeah, that’s exactly right.
As for the second part, I’m not sure how to answer. Squeezing the partner is without a doubt adaptive, but squeezing anything that is roughly the same shape is a byproduct with no (strong) evolutionary pressure. Now, the question is whether functional necrophilia is adaptive or just a byproduct is very difficult to answer, but I lean towards byproduct.