Evolution

[Abishalom]

They use it as -evidence- for E by NS, because it is. Common descent is simply the proposal that a long series of these speciation events led us to where we are. Genetics and comparative anatomy are the evidence that confirmed this suspicion. Science doesn't deal in proofs, in deals in evidence. This, added to the long list of misconceptions you have about evolution, would explain how you have managed to be wrong, again.

(you keep using the word "kinds" as though it weren't a complete joke, if you want to be taken seriously you should probably stop doing that)

You're taking the actual evidence and stretching it with your imagination resulting in a fabrication.

The evidence: Varation occurs within a species producing different kinds of the original species (ie finches with long beaks, short beaks and a variety of other features) to a certain extent. If the variant species gets isolated from the original population then speciation occurs.

Your imagination: Because we can observe variation and speciation this means that the diversity we see today is a result of endless speciation (even though our evidence says variation has limits) fueled by random mutations.

There is no evidence to back this claim. You are basically taking what we can observe and claiming it is evidence for what we cannot (and have not) observed based on a presumption that evolution is the cause for diversity on the planet.