The Demon-Haunted World: Science as a Candle in the Dark is a book by Carl Sagan and the scientific method for lay people to explain, and encourage people to learn critical or skeptical thinking. It explains the methods to distinguish between the ideas that science must be considered valid, and ideas that can be considered pseudo-science. Sagan, who, if new ideas for the consideration offered, they should be tested with the skeptical thought, and everyone should focus on penalty doubt...



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