Really.
If that's the case, we should just be able to demonstrate it in a controlled experiment, like we can with gravity.
Evolution is a theory like gravity is a theory.
Well, since gravity sucks, does evolution as well?
8-)
It's done all the time with fast reproducing critters. It's possible with larger creatures too, as long as you've got a few thousand years to wait.
Didn't you know that?
"If that's the case, we should just be able to demonstrate it in a controlled experiment, like we can with gravity."
Correct, and scientists have demonstrated genetic change within a population (evolution) millions of times.
"Evolution does not explain Creation" - Charles Darwin
Agriculture has been doing it for centuries.