Stepping down a stair or running off the edge of a patio is second nature to young children. But have you ever thought about the micro-decisions that a child must make to negotiate a changing terrain? Some of these decisions are rather profound in their complexity and timing, such as throwing back the arms to counterweight the torso in order to keep it upright as the child steps down a level. If you say, “The brain does this automatically,” please realize that this automaticity came slowly and consciously prior to skilled movement. Enjoy this video with voice-over, slow motion, and freeze frame features that pinpoint where the children are making clever micro-decisions.