Dude, I taught quantitative biology for 30 years so don't get flip with me as I don't appreciate it. I was only trying to make a point. I don't believe that natural selection had (past tense) anything to do with evolution except to get rid of the defectives.
Woah, hey, settle down. I'm not the one saying things like "negative infinity". Maybe we could reduce the flippancy on both sides of the issue, perhaps?
Anyway, if natural selection is reducing the defectives, as you put it, what is left? That that is adequate or better. Obviously, random mutation can make an organism worse. That's not disputed. What you have to prove is why random mutations can't make something better, even by the tiniest bit. It seems to be to be natural that if it can get worse, it can get better. Please prove why this isn't so.