"But your *example* is nonsense." 
That's incorrect, though you have managed to grasp that your own counter-argument hinges on my example being in error.
Too bad.
What my example does is point out the two most extreme situations:
#1 is selection pressures with no mutations, and
#2 is mutations with no selection pressures.
There is no "nonsense" about such extremes. They can easily exist in a lab or zoo, for example.
And they illustrate which is more important: selection or mutation.
Keep thinking about that point and eventually you'll catch on.
"That's incorrect, though you have managed to grasp that your own counter-argument hinges on my example being in error."
My argument is perfectly sound. You are flailing around like a Clinton, unable to admit your enormous mistake.
"There is no "nonsense" about such extremes. They can easily exist in a lab or zoo, for example."
No, they can't. Selection is ALWAYS present. You cannot get rid of it, no matter how much you try. Selection doesn't have to select for change.
" And they illustrate which is more important: selection or mutation.
Keep thinking about that point and eventually you'll catch on."
The answer is clearly selection, and it isn't even close.
You are still amusing though.