Take that first step in a direction of your own choosing, then with each bold statement, each strong stride, each clear-thinking choice let momentum joyously lift you higher and farther.

Light's new trick is fancier than a boring push: It created the more complicated force called lift, evident when a flow in one direction moves an object perpendicularly.

Like an airplane wing, it provides lift, although largely in a horizontal direction. And like an airplane wing, the slots between the main elements and the flaps add to the lifting power.