The thing is, most “poor design” arguments come from ignorance. We are constantly finding previously unknown functions (important functions) for the supposed vestigial structures and so-called “junk DNA.”
For instance, in October, 2007, Science Daily had the article: Appendix Isn’t Useless At All. Some scientists discovered that it is a safe house for good bacteria and can reboot the digestive system if needed. In December, 2011, one study found that individuals without an appendix were four times more likely to have a recurrence of Clostridium difficile, a common pathogen in hospitals (The Appendix May Protect Against Clostridium difficile Recurrence).
In July, 2009, National Geographic had an article called: Vestigial Organs Not So Useless After All. The study revealed an important role played by the spleen, formerly considered vestigial. Besides the fact that it helps filters out red blood cells that are damaged or old, it is a storehouse for a type of white blood cells for immune defense and tissue repair. Those without spleens are more likely to die from heart disease and pneumonia. In the article, Dr. Jeffrey Laitman admitted, “History is littered with body parts that were called ‘useless’ simply because medical science had yet to understand them . . . People say, ‘You can remove it and still live.’ But you have to be careful with that logic. You could remove your left leg and still live.” And the article also talked about the appendix discovery.
Evolutionists told us the appendix, the spleen, the pineal gland, the pituitary gland, the thymus gland, and over a hundred other things were vestigial, only to have science find out they had a function after all. How many people were exposed to increased infections during the tonsillectomy craze of the 1960s? They have now linked removal of tonsils to the risk of heart attack.
About 98% of our DNA does not code for proteins and so, for many years, evolutionists regarded that 98% as junk, but in September 2012 the ENCODE Project published evidence that most of it is functional. Don’t worry, there are more discoveries to come.
In my life I have found that if I just have a wait-and-see attitude, the truth eventually comes out. I have seen an amazing amount of Dysteleology claims get shot down with new discoveries.
But the thing is, if the Creator is the God of the Bible, then we are told that this is a cursed earth (all of creation is suffering as a result of man’s sin in Genesis 3); everything is in a state of progressive degeneration—bad things are supposed to happen and things are expected to get worse (e.g. mutational load). Unlike God, the creation is wearing out like a garment (as it says in Psalm 102:25-26).
It’s like the example of a gardener digging up an ancient book—the book is falling apart, its pages are mostly stuck together, and the type has faded. Does the current condition of the book mean that it never carried a message and that it wasn’t designed? The book is in a degenerative condition, but there is no denying that it was designed for a purpose and optimal for doing it’s job at one point in time.
Suppose you turn on a computer and it’s not working property. What do you say, “This computer must not have been designed because it’s not working properly”?
An unbeliever looks at the earth and finds examples of what he or she believes are evidences of poor design. Yet, it is very likely they might be witnessing degeneration from the Fall, or again that they are simply ignorant of the purpose.
As it has been said, “We will not assume, therefore, that because an unbeliever’s reasoning ability is flawed, this proves his brain was not designed” (just a bit of a low blow).
And besides, this argument can just as easily be turned around. Why has evolution been so slow at getting rid of useless structures in our case? Why isn’t evolution more effective at getting rid of vestigial structures if modern humans have been around for over 200,000 years?
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Oh, and every one of your complaints have been dealt with (many times) by apologetic websites. For example:
http://www.apologeticspress.org
http://www.creation.com
http://www.answersingenesis.org