If the Duchamp urinal is art, then anything is. But there has to be consensus about good art among informed people -- artists, dealers, curators, collectors. Somebody has to be the first to say something is good, but if you put it up the flagpole and nobody salutes it, then there's nothing there. WILLIAM RUBIN
Conventional eight groove rifling on the left, and octagonal rifling on the right. Polygonal rifling /pÉËlÉªÉ¡ÉnÉl/ is a type of gun barrel rifling where the traditional lands and grooves are replaced by hills and valleys in a rounded polygonal pattern, usually taking the form of a hexagon or octagon.n the Glock pistol, for instance, octagonal rifling is used in the large diameter .45 ACP bore, which has an 11.23 mm (0.442 in) diameter, since it resembles a circle more closely than the hexagonal rifling used in smaller diameter bores.
Polygonal Rifling. A barrel with polygonal rifling doesnât have the sharp lands and grooves of traditional rifling. Instead, the inside of the round barrel is shaped more like a polygon. In theory, there are no grooves through which gas could escape.olygonal Rifling. A barrel with polygonal rifling doesnât have the sharp lands and grooves of traditional rifling. Instead, the inside of the round barrel is shaped more like a polygon. In theory, there are no grooves through which gas could escape.