James Randi is a Canadian-American retired stage magician and a scientific skeptic who has extensively challenged paranormal and pseudoscientific claims. Randi is the co-founder of the Committee for Skeptical Inquiry (CSI), originally known as the Committee for the Scientific Investigation of Claims of the Paranormal (CSICOP). He is also the founder of the James Randi Educational Foundation (JREF). He 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, which he collectively calls "woo-woo". Randi retired from practicing magic at age 60, and from the JREF at 87.