The combined memory and inborn knowledge of all human experience is the root of the Tarot and can be used to divine the future. It is known as universal consciousness.
Most popularly categorized into recognizable archetypes, personalities, situations, images and metaphors that recur consistently throughout mankind’s existence by Carl Jung (whose analytical psychology is reflected in The Tarot), universal consciousness offers an explanation for why human beings of all ages and backgrounds can identify with certain emotions, experiences and personality traits despite living individually distinctive lives. The archetypes and situations laid out in this philosophy rely not only on human nature and shared experience, but also on synchronicity (and to a certain extent physics). Translation: for every action there is an equal, but opposite reaction. Good comes with bad, light comes with dark, words and deeds result in consequences.