"It's been a fascinating thing because we didn't really know how to write when we started South Park at all. It's been like, we've just sort of grown up a bit and it's amazing to just see how, if you take Butters and Cartman and put them in any scene, it works"

Trey Parker's quote talks with the development of South Park as a program. He recognizes that when they first began, they really did not understand exactly how to write, yet as they've expanded, they've been able to produce scenes that work with any type of combination of characters. This speaks to the strength of the personalities as well as the writing, as they are able to be put in any type of situation as well as still be enjoyable. It likewise speaks with the growth of the show, as the writers have actually ended up being more seasoned as well as have been able to develop even more complicated and fascinating tales. The quote is a testimony to the success of South Park as well as the skill of the authors.