You learned, for example, how to weave
in a circular fashion around the arena in order to force your foes into a gravitationally dense, endlessly moving mass of enemies.
In 2006, he showed how metamaterials could be
fashioned into a
circular shell capable of funneling light
around any object placed inside, rendering it invisible — as did, independently, John Pendry of Imperial College London and colleagues (Science, 23 June 2006, pp. 1777 and 1780).