Phillip Tetlock was in turn referencing the work of Isaih Berlin in his famous essay "The Hedgehog and the Fox" (1953) which as far as I know is where this old

Phillip Tetlock was in turn referencing the work of Isaih Berlin in his famous essay "The Hedgehog and the Fox" (1953) which as far as I know is where this old Greek aphorism acquired it's modern meaning. http://www.jstor.org/stable/j.ctt24hqz8 http://www.jstor.org/stable/j.ctt24hqz8