all a freedom of will. The metaphysics of the Nyaya and Vaisheshika schools strongly suggest a belief in determinism, but do not seem to make explicit claims about determinism or free will. A quotation from Swami Vivekananda, a Vedantist, offers a good example of the worry about free will in the Hindu tradition. However, the preceding quote has often been misinterpreted as Vivekananda implying that everything is predetermined. What Vivekananda actually meant by lack of free will was that the will was not "free" because it was heavily influenced by the law of cause and effect – "The will is not free, it is a phenomenon bound by cause and effect, but there is something behind the will which is free." Vivekananda never said things were absolutely determined and placed emphasis on the power of conscious choice to alter one's past karma: "It is the coward and the fool who says this is his fate. But it is the strong man who stands up and says I will make my own fate." Scientific approaches Science has contributed to the free will problem in at least three ways. First, physics has addressed the question of whether nature is deterministic, which is viewed as crucial by incompatibilists (compatibilists, however, view it as irrelevant). Second, although free will can be defined in various ways, all of them involve aspects of the way people make decisions and initiate actions, which have been studied extensively by neuroscientists. Some of the experimental observations are widely viewed as implying that free will does not exist or is an illusion (but many philosophers see this as a misunderstanding). Third, psychologists have studied the beliefs that the majority of ordinary people hold about free will and its role in assigning moral responsibility. From an anthropological perspective, free will can be regarded as an explanation for human behavior that justifies a socially sanctioned system of rewards and punishments. Under this definition, free will may be described as a political ideology. In a society where people are taught to believe that humans have free will, free will may be described as a political doctrine. Quantum physics Early scientific thought often portrayed the universe as deterministic – for example in the thought of Democritus or the Cārvākans – and some thinkers claimed that the simple process of gathering sufficient information would allow them to predict future events with perfect accuracy. Modern science,