Creative success is a sauce. It can make a good main course great, but your stomach will be upset if it’s your whole meal, and you’ll go hungry soon after. You wouldn’t want to substitute it for a main course though.

Creative sustainability is the main course. You can eat it on its own, and it will give you enough nutrition to live. It may be boring sometimes, but your stomach will be happy after eating it. A little bit of sauce is a nice touch, but you don’t need it. 

Sometimes, the main course is even better without sauce.