knowledge is necessary but too much of it can be harmful for creativity—it is almost a necessary evil (see also Csikszentmihalyi, 1996 and Simonton, 1999). This view of creativity is not restricted to scientific research. As a popular ‘creativity trainer’ wrote: “Too much experience within a field may restrict creativity because you know so well how things should be done that you might be unable to escape to come up with new ideas” (deBono, 1968, p. 228).