I was not referring to evolution/natural selection in that instance, but rather to abiogenesis.
Ah, so we switched topics between responses without indictating it?
Even so, it doesn't matter: Macroevolution has never been scientifically observed either, and Creationist do not deny natural selection. (Well, I guess some will have a knee jerk reaction and deny any and all parts of the evolutionary argument- but it's not necessary to do so to argue for Creationism.)
I did not switch topics without indicating it. The fact that I explicitly stated abiogenesis immediately prior to making that statement should've implied that the immediately following statement referred back to its antecedent.