His point about cross-polination of fields leading to innovation is also made extensively by Mihaly Csikszentmihalyi in his two books "Flow" and "Creativity". I

His point about cross-polination of fields leading to innovation is also made extensively by Mihaly Csikszentmihalyi in his two books "Flow" and "Creativity". I'd highly recommend them to anyone who is interested in the process of creativity (he looks at it in a number of different fields), or who is interested in human behavior (especially one's own).