This video features the outspoken champion of reason, Richard Dawkins. A British evolutionary biologist and celebrated author, Dawkins has made numerous contributions to science. In recent years, he has battled against delusion. In this video, Dawkins challenges faith healing and alternative medicine. Faith healers and alternative medicine practitioners misuse and distort the real knowledge, language, and concepts that science has given us. Their practices, entirely unencumbered by a need for evidence, form a multimillion dollar industry that might indeed be nothing more than social parasitism advanced by the placebo effect.