How Do You Respond To Those Who Point To Features Of Plants or Animals That They Claim Are Poorly Designed ?

Professor Behe: Just because we don't know the reason for some feature in an organism does not mean that it doesn't have an important role to play.
For example, so called vestigial organs were once thought to show that the human body and other organisms were poorly designed..

The appendix and the tonsils, for instance, were once thought to be vestigial organs and were routinely removed.
But then it was discovered that theses organs play a role in the immune system, and they are no longer vestigial.
Another point to remember is that in biology certain things apparently do occur by chance..
But just because my car has a dent in it or gets a flat tire does not mean that the car or tire was not designed.

Likewise, the fact that some things occur by chance in biology does not mean that the sophisticated, complex,
molecular machinery of life arose by chance..
That argument is simply not logical.