A Click on the Fibers

My joints clicked. Just like that, my right arm swung forward on its own! The textured carpet beneath me felt dense and springy. I swiveled my torso, gave my plastic boots a test bend, and stepped toward the thick black cord resting nearby. Reaching out with my open hand, I clipped my grip right onto the smooth rubber curved line. It snapped into place with a neat, satisfying tap. Look at that—I can move!