In a classic scene in the science-fiction blockbuster The Matrix, life starts to run in slow motion. Guns are fired at the main character Neo, but the bullets fly as if through molasses—and our hero’s quickened reflexes allow him to jump out of harm’s way. Many of us have experienced a similar deceleration of events during accidents or other life-and-death situations. You see the tree branch on the road, hit the brakes, and it seems like an eternity before you know if you avoided the collision or were too late.