
He says that science works much better than any other system because it has a "built-in error-correcting machine". Sagan shows how scientific thinking is both imaginative and disciplined, bringing humans to an understanding of how the universe is, rather than how they wish to perceive it. Sagan explains that science is not just a body of knowledge, but is a way of thinking. Sagan states that when new ideas are offered for consideration, they should be tested by means of skeptical thinking and should stand up to rigorous questioning.

They explain methods to help distinguish between ideas that are considered valid science and those that can be considered pseudoscience. The Demon-Haunted World: Science as a Candle in the Dark is a 1995 book by the astrophysicist Carl Sagan and co-authored by Ann Druyan, in which the authors aim to explain the scientific method to laypeople and to encourage people to learn critical and skeptical thinking.
