The man nicknamed “the father of creativity” was psychologist E. Paul Torrance. In the 1940s he began researching creativity in order to improve American education. In order to encourage creativity, we needed to define it — to measure and analyze it. We measured intelligence with an IQ score; why not measure creativity? But there’s a problem. “I’m not sure I have a definition of creativity,” says James Borland. And Borland should know; he’s a professor of education at Teachers College, Columbia University. “It’s one of those human constructions that isn’t discovered but invented ... It’s a word we use in everyday speech and it makes perfect sense, but when you start to study it and try to separate out its constituent parts, it becomes more and more and more confusing. Nobody agrees on what it is.” How can we measure something if we can’t agree on what it is?