Constantly reminded of how quickly movies come and go with the do-or-die box office climate, intact now for, say, 15 years, accelerated by the Web, faster pace of society, and so on. "Ender's Game," beloved by sci-fi fans since publication, will probably be dwarfed by the "Thor" sequel. Then it comes back to strong storytelling, where "Gravity" has shown legs worldwide, and "12 Years a Slave" with a niche population. The story also ensures longevity, or maybe it's Orson Scott Card's outspokenness against same-sex marriage. Either way, it's probably not the fault of Gavin Hood, the director, who's done great work in the past. Or, maybe, with storytelling, it is this time around.