Bad news for Creationists: archeologists have discovered yet another transitional fossil

Archeologists in Canada have discovered the fossil of a previously unknown species that shows features of both land- and water-dwelling mammals. Though not a direct ancestor of modern seals, the fossil nevertheless gives clues to how today's water-dwelling mammals evolved. One begins to wonder how complete the fossil record needs to be before Creationists admit they've been wrong all along. Something tells me no amount of completeness will ever satisfy them.

Continue ReadingBad news for Creationists: archeologists have discovered yet another transitional fossil

My growing impatience with creationists: a side by side comparison of evolutionary biology and creationism

Over the past three years of writing for DI, I have discussed evolution with many creationists who have posted comments at this site. These exchanges have been good for me. They have forced me to think harder about exactly what it is that I understand about evolution and what evidence supports my understanding. These exchanges have also helped me to understand the concerns and mental gymnastics of creationists. I now find myself getting increasingly impatient with the creationists, however. It was initially interesting to banter with creationists because I enjoyed the challenge of trying to understand why they claimed the things they claimed. I’m now getting annoyed with these creationists arguments, and it mostly has to do with the refusal of creationists to acknowledge relevant scientific observations from the real world. My frustration also stems from the anti-scientific mindset of creationists. As a group, creationists refuse to argue even-handedly. They become skeptical only when it suits their immediate needs—they don’t apply skepticism equally both to their own claims and to the claims of those with whom they disagree. As a group, they scurry to find disingenuous arguments to support points that they actually learned in churches, not in science books. Many of them are consciously dishonest, and when you call attention to their obvious untruths, they try to change the subject. There are exceptions to this rule. There are some creationists who aren’t consciously being dishonest, but those creationists tend to be so incredibly ignorant of the principles of the scientific theory of evolution that they lack the ability to meaningfully criticize evolution. Their arguments are aimed at things that no competent scientist has ever claimed. For numerous excellent examples of this problem, see these videos by AronRa here and here. It is well-established that humans are susceptible to committing errors caused by the confirmation bias. We seek out evidence that supports our current beliefs. Scientists are imminently aware of this danger and they work hard to design experiments to counteract this bias. Creationists (who don’t even try to run experiments) excel at feeding their confirmation biases. They proudly exclude evidence that threatens their opinions. Creationists come to mind when I consider David Hume’s quote: “Reason is and ought only to be the slave of the passions, and can never pretend to any other office than to serve and obey them.” [A Treatise of Human Nature, (2nd Ed.), Book II, Part I, Section III (“Of the influencing motives of the will”) (1739)].

Continue ReadingMy growing impatience with creationists: a side by side comparison of evolutionary biology and creationism

The Footprints of Creative Creationists

There is yet another story going around about dinosaur and human footprints found together in ancient (maybe 4,000 years old!) rock. Here is the local credulous Texas take on the find. All the previous pictures of contemporaneous dinosaur and human footprints provided by these people showed that humans used to…

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Explore your inner fish

I have just finished reading Neil Shubin’s new book: Your Inner Fish: A Journey Into the 3.5 Billion Year History of the Human Body (2008). Shubin is one of those writers who writes to you as though he is speaking to you.  He manages to keep his sentences short yet friendly while he takes you on a mind-blowing journey from single-celled organisms up to his detailed explorations of human animals. Shubin is Provost of the Field Museum in Chicago, as well as a professor of anatomy at the University of Chicago.

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The audience that really needs to read Shubin’s book will actively avoid reading it, of course.  Just think of the frustration that creationists already have with their idea that evolution teaches that “humans descended from monkeys.”  I hear this wrongheaded claim repeatedly and it gets quite tedious explaining to the creationist ignoramuses that no modern believer in evolution believes that humans descended from “monkeys.”  The irony of correcting creationists, however, is that the story of how the Earth’s creatures evolved is actually incredibly more interesting and challenging than the creationist’s simplistic version of evolution.  For instance, human ancestors include not only primates; they include fish too, and reptiles and worms.  Neil Shubin takes us on this awesome journey and there is much to share along the way.

I previously wrote about one of the incredible transitional forms discussed by Shubin, tiktaalik, an ancient fish that crawled out of the water. Tiktaalik, however, is only one of numerous transitional …

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How to find an elusive transitional fossil – the story of Tiktaalik

How does one find a transitional fossil?  It's a lot harder than I ever imagined. I just started reading a book that looks quite promising: Your Inner Fish: a Journey into the 3.5 Billion Year History of the Human Body (2008), by Neil Shubin.  The author is a professor of…

Continue ReadingHow to find an elusive transitional fossil – the story of Tiktaalik