Believe it or not, some people actually say observed changes prove that all life evolved from a common ancestor. Some people like Richard Dawkins unknowingly do it (giving him the benefit of the doubt...).
However this is so illogical.
Note: I'm not conceding that we do observe evolutionary change, as the title of the video might suggest. I'm just saying, for sake of argument, that even if we did observe evolutionary change it wouldn't prove evolutionary THEORY.
