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Idols of the Cave result from being unaware of individual biases, receiving poor education and an overemphasis on meeting their psychological needs. The Idols of the Tribe results from allegiance to current scientific biases and to the negative aspects of human nature like impatience and the need for quick solutions. The Idols of Marketplace occur when scientists are more interested in financial rewards and status than true knowledge, and utilize ambiguous words, abstract concepts, and unscientific theories. Idols of the Theater results from a blind belief in any theory or philosophy, e.g., the philosophies of Aristotle, Plato, or Galen.