memes

Eh, so do we. If you're in a wooden house, it's also made of hydrocarbons. Of course there's a difference, it's not literally made of human flesh, but neither are Lego houses: they're made of the same stuff as Lego people; and so are our houses made of the same stuff as us. It's a philosophical distinction, to say what truly divides me-flesh-stuff and house-stuff, because in one level, they are certainly different, and on another they are the same. The Lego world being all made of mouldable plastic would presumably have metaphysical distinctions between this-stuff and that-stuff that seem subtle to us, who have distinctions between this-hydrocarbon-stuff (or even this-molecular-stuff) and that-hydrocarbon-stuff.