“Every civilization was built off the back of a disposable workhorse,” a blind, berobed Jared Leto says, cradling a newborn Replicant. A filthy, trenchcoat-clad Officer K (Ryan Gosling) stalks around a desert city, looking for an aging, reclusive Rick Deckerd (Harrison Ford). There are garish ads projected the sky, huge explosions, and forces coming to…