The extent to which we have control over our lives is somewhat more limited than what we might perhaps first assume: Where, when and how we are born, how we are brought up, who our parents are, how our childhood pans out. All of these are clearly beyond our control, yet it would appear that the same non-existence of control holds for ourselves- Do we have free will? Do I have any control whatsoever over anything? Is talk of ‘I’ meaningless?
A hard materialist would say that free will is an illusion which we experience when conscious, perhaps because this illusion is in fact incredibly pragmatic-it enables us to feel in control of our lives, gives us a sense of responsibility, and allows us to hold others accountable for their actions. Nevertheless, an illusion is all it may be. First, if we are free, this must mean that there is some part of us which is not bound by the natural world, which can separate itself from the scientific laws and rise above them-something non-physical. There is no hard evidence for such a faculty (because of its nature). Second, the talk of ‘I’ is ambiguous. One might argue that ‘I’ can choose freely without being controlled by external factors, such as one’s environment, one’s memory, one’s state of mind (e.g. homicidal), yet what is the ‘I’, if anything at all, but the amalgamation of all these and more?
It could perhaps be said that free will is an illusion if the brain is responsible for our mental states (which evidence suggests it is), but that it is an illusion that we cannot do any with. A sense of morality would collapse, and society could no longer justifiably punish anyone because they were guilty. Freedom may be an illusion, but a necessary one.