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The issue of free will is a philosophical problem dating back almost to the origins
of philosophical questioning. It is difficult to reconcile human capacity for free will with
the idea of determinism, meaning everything in the world is determined because every
action has a previous cause. Due to the arrival of the scientific revolution, and more
specifically, discoveries in biology, the existence of free will seems to be negated.
Genetic discoveries appear to show that everything from eye color to personality traits
are determined by DNA, implying that we do not have free will to choose how to behave.
Neuroscience seems to demonstrate that our brains make decisions without our input,
with the pre-frontal cortex controlling how we act. Although biological determinism
appears to exist, through deeper analysis of genetics and epigenetics, philosophical
theory, and neuroscientific evidence, it is apparent that human beings retain free will in
certain situations and to a certain extent. There are times when the brain is not controlled
by determinism, when human beings have the capacity to choose, free of genetics and the
influence of the brain.