One day the aliens will rock up on our doorstep. They’ll bow deeply to us with respect, and we will bow deeply in return (haha jokes, we’ll probably shoot them out of the sky, because human, but let’s pretend for a moment). They will tell us what it is like to be a soul in their particular kind of body, the kinds of things they have learned and done to ascend and grow and contribute to the well-being of the universe.