When asked in an interview in OPM, “Do you have any advice for aspiring game designers?” Wright answered:

Expose yourself to ideas, subjects, and design approaches from outside the games industry. There’s a world of useful stuff out there for you to discover, and by pulling from outside sources, you’ll contribute to broadening games rather than inbreeding them.

Substitute just about anything for ‘gaming’ in this and it still sounds like good advice to me.