The Borderlands of Science: Where Sense Meets Nonsense (Unabridged)

Many people have difficulty figuring out the difference between science, borderline science, and just plain nonsense. When is a theory a fact, and when is it just conjecture? Michael Shermer, a leading science author and skeptic, divides knowledge into three classes: science, based on factual evidence; borderline science, based on scientific conjecture; and nonsense, where anything goes (e.g., Bigfoot). He is especially zealous about separating science from borderline science; borderline science includes many modern grand explanatory hypotheses, such as superstring theory. Nonetheless, most attempts to create a Theory of Everything result in nonsense. Shermer explores the work of Darwin, Freud, and Carl Sagan, as well as the shameful episode of the Piltdown Man.