Although pure nylon has many flaws and is now rarely used, its derivatives have greatly influenced and contributed to society. From scientific discoveries relating to the production of plastics and polymerization, to economic impact during the depression and the changing of women's fashion, nylon was a revolutionary product.[1] The Lunar Flag Assembly, the first flag planted on the moon in a symbolic gesture of celebration, was made of nylon. The flag itself cost $5.50, but had to have a specially-designed flagpole with a horizontal bar so that it would appear to "fly".[45][46] One historian describes nylon as "an object of desire", comparing the invention to Coca-Cola in the eyes of 20th century consumers.[4]