There are even evolutionist books today that label the appendix as useless, even though it has been proven to be an important part of the immune system of young children. In the case of the appendix, doctors had been removing appendixes from adults for years with no apparent effect on the people involved. Only as a more complete scientific investigation of the immune system progressed was the real purpose of the appendix discovered and the prejudiced judgment of the evolutionists set aside. Over the years those 180 organs have been reduced to a mere handful still claimed by evolutionists to be leftovers as real scientific investigation has demonstrated the foolishness of the prejudices of the evolutionists. Evolutionists so desperately want some kind of evidence to support their evolutionary story telling, they will see or not see whatever makes their story sound better.
Evolutionists claim that evolution is the uniting principle in biology.
What faith in evolution has really done, though, is to lead researchers down blind alleys that sets real research back many years. The fact is that there are no vestigial organs. God designed us, and didn't include unnecessary parts. The human body, like all the rest of creation, does groan under the curse of sin. But even in our present deteriorated state, God's design still clearly shows through.