Sep 24 2015
This week I have been making my way through a list of old and debunked creationist arguments put together by Michael Snyder (a young-earth creationist), giving the old arguments new life on social media. As science communicators we often have to play this game of whack-a-mole, persistently addressing points that have already been refuted. Each time is an opportunity to educate more people about the real science of evolution, about logic and critical thinking, about science in general, and the vacuous and deceptive arguments of the science deniers.
The next five points that Snyder raises are all variations on the same theme:
#30 Which evolved first: blood, the heart, or the blood vessels for the blood to travel through?
#31 Which evolved first: the mouth, the stomach, the digestive fluids, or the ability to poop?
#32 Which evolved first: the windpipe, the lungs, or the ability of the body to use oxygen?
#33 Which evolved first: the bones, ligaments, tendons, blood supply, or the muscles to move the bones?
#34 In order for blood to clot, more than 20 complex steps need to successfully be completed. How in the world did that process possibly evolve?
Snyder, of course, is asking a false question, one with an unstated major premise that is wrong, or at least misleading. The implication he is trying to make is essentially the debunked notion of irreducible complexity – that complex structures or biological systems could not have evolved because they could not have simpler functional states.