Science is knowledge that developed and proven through experiment. Art is something abstract and as contrasted with scientific or technical subjects. Generally; Art=Psychology of Trading and Science=Technical Analysis. Once you view the chart (which most of the traders do), you need to know both aspects. Science will affect Art and vice verse. Both elements will always drive the price movement and once the expectation changes, so do the price direction. Smart speculators will always find the loophole of the financial system and use “Art” or “noise” to affect the price movement and novice investors emotion. They are the front liners; in every level, they will buy low (or sell high) while novice investors will always buy high (or sell low). But you will ask, “how low is low?” and “how high is high?”.The answer is “how much risk you willing to take and how deep is your pocket?” I would suggest you must have substantial capital stand by if you plan to invest in FOREX and always remember the basic rules of the games. I end this article with a quote:- “What Is Scientifically Optimal Is Psychologically Impossible”.