So in the mysterious opinion of CTD, how was the Grand Canyon created? And why does this method explain the evidence better than river erosion and an old earth?

It's unusual for me to be debating someone who refuses to clarify their position. Is there a reason for this reticence? Other than a silly little attempt at a wind-up, that is? Bearing in mind what's been said elsewhere about manners I hate to put it that way, but blow me if I can see any other reason for it. I'm assuming that you yourself know what your position is.