. . "Based???very, very loosely???on a short story by Ray Bradbury, A Sound of Thunder conjures a future out of painfully unconvincing special effects: early on, Travis and spunky team member Jenny (Jemima Rooper) tread a sidewalk as they discuss their woeful chosen careers, cabs and other vehicles lumbering along behind them, designed to reflect a military-chic aesthetic (the Hummer seems the dominant" . .