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After describing a flamboyantly wacky hotel complex in Las Vegas , Westlake wrote the following : " When Brandon entered the spacious living room of cottage number one at three that afternoon , Earl Radburn in his knife-crease tan clothing stood at the picture window , with its view out over the Battle-Lake , at the moment peaceful , with the tall Moebius shape of the hotel beyond it . The operations themselves were risky , with a death rate of about 1 in 50 . Egged on by TV shows and commercials expounding the benefits of weight-loss surgery , adult patients have begun showing up at Penn 's Center for Weight and Eating Disorders demanding an operation as an easy first step to thinness . In the latter case , the nested polygons typically change shape , and the bugs fail to meet simultaneously at some central spot . With so many stars visible , it 's not particularly difficult to pick out groups that appear in a certain pattern : four stars that nearly form a straight line or a square , six stars that define a cross , seven stars in the shape of a dipper . Blumenthal 's investigation focuses on Enviga , a green-tea drink that contains caffeine , calcium and a green tea extract known as epigallocatechin gallate , or EGCG . The ceiling must have carefully orchestrated corrugations that scatter sound so that roughly the same amount of energy goes in every direction . An Enviga Web site claims that the drink 's blend of green tea and caffeine burns more calories than it contains and can help drinkers maintain an ideal weight . If the speeds were kept constant , the triangles would change shape in successive snapshots . In a wide hall , the first strong sound to arrive at a listener 's ears , after sound traveling directly from the stage , is the reflection from the ceiling . Coke says EGCG speeds up metabolism and increases energy use , especially when combined with caffeine . To improve the acoustics of such halls , sound must be redirected from the ceiling toward the walls . Interestingly , for paths converging to a Brocard point , the successively smaller triangles remain the same shape from one snapshot to the next . They start to crawl clockwise at a constant rate , each moving toward its neighbor . Ceiling reflections produce very similar signals at each ear .