who was the smartest guy in the world
Christopher Langan. Christopher Michael Langan has a verified IQ of 195. Christopher Langan is an American autodidact with an IQ reported to be between 195 and 210. He has been described as âthe smartest man in Americaâ as well as âthe smartest man in the worldâ by the media. He began talking at six months, and taught himself to read when he was three.