Graphology pharmacological therapeutic agents. The study of these phenomena is a by-product of researchers investigating motor control processes and the interaction of nervous, anatomical, and biomechanical systems of the body. "The Vanguard Code of Ethical Practice", amongst others, prohibits medical diagnosis by those not licensed to do diagnosis in the state in which they practice. This is the pseudoscience of changing a person's handwriting with the goal of changing features of his or her personality, or "handwriting analysis in reverse." It originated in France during the 1930s, spreading to the United States in the late 1950s. The purported therapy consists of
What Is and What Should Never Be descending riff [of "What Is and What Should Never Be"] is amazing: It's like a bow is being drawn back, and then it releases. The rhythm of the vocals is almost like a rap. It's insane — one of their most psychedelic songs." This was also one of the first songs recorded by the band for which Robert Plant received writing credit. According to rock journalist Stephen Davis, the author of the Led Zeppelin biography "Hammer of the Gods: The Led Zeppelin Saga", the lyrics for this song reflect a romance Plant had with his wife's younger sister. "What Is