Nostalgia may actually have had an evolutionary purpose and it sill isn’t necessarily a bad thing.
What about déjà vu? What’s it good for?
Did you hear that Robert Galbraith is really J.K.Rowling? If you did, you can thank forensic linguists!
And two stories about dogs: 1) Maybe they do have color vision after all!! 2) Carolina dogs have been on this continent for a lot longer than my labradoodle’s breed, and all the ones that went into it.