Disclaimer: I’m not a scientist, but I did once stay at a Holiday Inn Express.
Intelligent Design (ID) or as I prefer to call it, Incompetent Design, advocates have stated that the universe, the Earth, and the human body are so complex they couldn’t possibly have “just happened” or evolved. The Irreducible Complexity argument fails to take into account a very elementary concept: fewer moving parts mean fewer points of failure.
It’s representative of a very basic and fundamental flaw in reasoning that a person could look at the human body and think it’s been designed by some being of incredible intelligence outside of space and time as we know it. Had the human body been designed (by a being more intelligent than a high-schooler), we should expect to see the fewest possible parts serving the maximum possible purpose. We should not expect to see vestigial or redundant organs and bone structures or organs that are inferior to other examples in nature that serve the same purpose.
When you then attribute this work to a god who is said to be perfect and all-knowing then you have huge hurdles to overcome. If this god knows everything and doesn’t make mistakes, then why does it appear that the human body has undergone major overhauls and gone “back to the drawing board” several times? The design of the human body certainly doesn’t indicate any kind of special creation over any other animals on the planet as we have much the same structures and mechanisms that every other living being has except some of ours don’t work as well. We’re susceptible to all sorts of diseases and conditions that make our bodies frail and lead to devastating failure. This isn’t the mark of an expert craftsman.
This is a ridiculous argument for IDers to make and I don’t know why they continue to do it. I’m talking to you, Demski and Craig. Quit it!