Because it changes the rock, yada.
Matt, you're right, Spanker and I didn't quite write what we intended (or at least I didn't - but I'm pretty sure the same goes for Geoff).
I think posting about having to nail a clean route because I realized I couldn't get down otherwise, because I misjudged the conditions, is kind of like posting about having to get a helicopter rescue. The tone ought to be more like, here's my mistake (heading up in a storm) and here are the results (nailing a clean route) so don't do what I did.
I didn't mean to chew Collins out at all - unfortunately the nature of the medium is to eliminate a lot of the subtle signals that may be all that distinguishes a friendly conversation from a hostile argument. Hey, to you Collins, at least you didn't have to have your frozen ass dragged off the cliff, and you didn't make the evening news either.
Brew to you too Matt