James Randi was a Canadian-American stage magician, author, and scientific skeptic who extensively challenged paranormal and pseudoscientific claims. He was the co-founder of the Committee for Skeptical Inquiry (CSI), and founder of the James Randi Educational Foundation (JREF). Randi began his career as a magician under the stage name The Amazing Randi, and later chose to devote most of his time to investigating paranormal, occult, and supernatural claims.