Circumstantial evidence is defined as evidence that relies on an inference to connect it to a conclusion of fact, like a fingerprint at the scene of a crime.<quoted text>I have seen some of this evidence. It is real.
By the way, you may want to look into getting a better idea of circumstantial evidence. I don't think you know what that means either.
By contrast, direct evidence supports the truth of an assertion directly.
That there was a "common ancestor" is circumstantial evidence.