" 9. Random movements provide variation that leads to developmental breakthroughs. Monumental gains, Feldenkrais discovered, are made not by mechanical movement but by the opposite—random movements. Children learn to roll over, crawl, sit, and walk through experimentation. Most babies learn to roll over, for instance, when they follow something with their eyes that interests them, then follow it so far that, to their surprise, they roll over. "

― Norman Doidge , The Brain's Way of Healing: Remarkable Discoveries and Recoveries from the Frontiers of Neuroplasticity