I love this quote from Charles Eames, via Swiss Miss.
"Here is one of the few effective keys to the design problem — the ability of the designer to recognize as many of the constraints as possible — his willingness and enthusiasm for working within these constraints. Constraints of price, of size, of strength, of balance, of surface, of time and so forth."
- Charles Eames
Creativite expression, in all varieties, is framed by margins. How rules are negotiated and resolved has everything to do with the quality of the work produced, which is often a solution to a problem.