Your life is dominated by your unconscious mind: by thoughts you're unaware of and movements you don't realise you are making. Words, colours, mannerisms and other cues you don't realise are affecting you, change what you think. 'Unthink' explores the unconscious decisions we make, and covers a variety of topics, ranging from how we choose politicians and romantic partners to more abstract subjects such as whether we can consciously decide to move our fingers.