Humans appear to exhibit free will because they make choices and demonstrate unique personalities. All of these choices, however, are ultimately the deterministic outcome of their ancestry, genes, history, environment, and so forth. Since the notion of an individual makes no sense in isolation from all of these determining factors, it is non-sensical to suggest that an individual uniquely possesses the power to make choices. Hence, "free will" is merely an illusory manifestation of the effects of all the complex factors that determine the choices made by an individual. In simpler terms, it is easier to pretend that an individual makes his or her own choices than it is to follow the complex and chaotic chains of actions and consequences that ultimately determine every aspect of an individual's identity and choices.