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At first glance this premise strikes as a revelation, but as the film develops the premise is not so cogent and not so epiphanic. Equilibrium presents a society where human emotions are controlled by the scheduled injection of a drug called "prozium" during specific times of the day. Every member of the society takes the drug at the same time. A rigid opposition to emotions is ubiquitous. Everyone must live a life free of emotion, from adults to children. This is a society where music, colors, paintings, and even crying is forbidden. Those who revolt and strive to live an emotional life are branded as "sense offenders", and their offenses are punishable by bullets, or incineration. Paintings are burned. Books are burned. People are burned. Dogs are shot. Obedience to the state is rewarded.
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Those who participate in this society appear to sustain an equable way of life that is partly characterized by a internal trilateral resistance of prozium and reason versus emotion. Is this constitutive of a peaceful and happy person? Peaceful perhaps. Happy perhaps not. Indeed this issue presents an interesting question of whether a peaceful society is a happy society. While this society appears to be peaceful, describing this society has a collection of happy individuals would be challenging. With emotions being so stigmatized, happiness would have to be defined by the ability of people feel the least amount emotions as possible. The less one feels, the happier one is.
Since there is such a relentless vigilance against emotions, the members of this society are watchmen of their own emotional suppression, and they are perpetually encumbered with the task of controlling their emotions by the injection of prozium. As peaceful as this society aims to be, there is constant control by the authorities as people deal with the struggles of controlling their emotions. Sense offenses are dealt with draconian swiftness, and because emotional suppression means no war and violence, this does not necessarily mean there is peace, for one the challenges of being human is to have reason and emotion come to an equilibrium.