He is described as being inhumanly beautiful with refined and perfected features. By 1951, he had perfected his vocal style and refined his guitar skills. Through experimentation, technique may be perfected. Knight was an innovator of the motion offense, which he perfected and popularized. While this technology is widely utilized, the intelligence has not been perfected. This technique was perfected in 13th century Venice. Over time, Telefunken perfected their designs and in 1950 the V-72 amplifier was developed. The concept was not perfected and therefore failed to gain acceptance. It was perfected in the 9th-11th centuries and declined afterwards. Transformation of genes into human cells has not been perfected yet. Construction methods had been perfected and building types conventionalized. This sight however was not perfected until 1885. Insofar as hoplite warfare could be perfected, the Spartans did so. By 1914 he had perfected his first cosmetic product. After nearly a decade of research the fiber was perfected in 1959.