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Natural Selection and common descent

Posted: Wed May 15, 2013 11:05 am
by mkprr
My brother asked that I post his most recent video about natural selection and common descent here for comment. He made it a point to separate in the video what is factual, and what is theory and I think he did a fair job of that. Are there any parts of this video that you think misrepresent important information on the subject? Thoughtful criticism is welcome.

Thanks!

http://www.youtube.com/watch?v=0SCjhI86grU

Re: Natural Selection and common descent

Posted: Wed May 15, 2013 12:24 pm
by steve
I think it is well done.

Like all evolutionary presentations, however, it seems to make the leap from the fact that some species share a descent from a common ancestor to the wild speculation that widely different types of living things (e.g., plants and animals; protozoa and metazoa; fish and birds, etc.) also share common ancestry with all others. This extrapolation is both undemonstrated and unlikely.