[quote=@Clever Hans]
I think there's some confusion among terms.  To have [i]ideas [/i]limited by setting, plot etc. doesn't necessarily mean that [i]creativity [/i]is limited.  Also, do you equate creativity with ingenuity?  When faced with a creative framework, an artist has to work harder to accomplish her goals.  Does the situation therefore limit or encourage creativity?  Or are limitations and lack of limitations two different kinds of stimuli that both engender creativity in different ways?
[/quote]

Knowing that I could possibly be misunderstood I just consolidated dictionary definitions of creativity and came to the conclusion that creativity is the use of original ideas. Ingenuity and inventiveness I do not equate with creativity, but I do believe that they work together with creativity. I don't think they foster creativity but use it instead, but I also think ingenuity can be used [i]despite[/i] the lack of a framework. [@LegendBegins] seems to somewhat make this point—the unspoken limitations of skill and experience are much more freeing than other limitations but still encourage the inventive use of creativity; I can vouch for that from my own experience.

Given what I've said, I think the answer to your question is that they engender ingenuity in different ways, but that that is different from creativity.