Dominology 103 talked about the idea that you have to be expressing your wishes clearly as a dominant. In a way you might call limits the matter of gracefully accepting those wishes once given.
Many people are reminded of a roller coaster when watching an experienced dominant work. They tend to start out slow and build a momentum. There is an illusion at play of a constancy of motion, as though the dominant was simply willing a session to hurtle ahead, faster and faster. But that's not really the case. What isn't as obvious to many is that there is a constant up and down at play, escalating and decelerating, intensifying and relaxing that momentum.
This is because of the necessary back and forth process between a dominant and a submissive. The dominant is constantly expressing his wishes to the submissive and then allowing her space to fulfill that want. This is always the case, though sometimes it may not look that way.
Consider a scenario where it generally appears to be the opposite: a session of heavy bondage and impact play. Once the girl is cuffed in place, she's surely along for the ride, right? The dominant is simply having at with floggers and paddles and whatever devilish implement he feels like pulling out, isn't he? In fact, he often affects a demeanor of cruel disregard for her wishes at that point.