[taxesareforever]

It is if the legs are longer as a result of longer-legged offspring having better reproductive success. Just what do you think that evolution states?

Your statement is exactly why evolution will always be a theory and never a fact. In answer to your question: In the life sciences, evolution is a change in the traits of living organisms over generations, including the emergence of new species.

[Dimensio]

Your statement is exactly why evolution will always be a theory and never a fact.

I believe that you have forgotten what many others have told you in the past. Scientific theories are the highest "rank" that an explanation for an event can achieve. There is no "graduating" to any higher state, including "fact". A "Fact" in science is not a higher rank than "theory"; in science, "facts" are single data-points. They tell you what's been observed, but beyond that they're of little use. If you want to actually explain things, you need theories.

In the life sciences, evolution is a change in the traits of living organisms over generations, including the emergence of new species.

This is true. How does this contradict what I said?