It's common among skeptics and secularists of various types to point toward the shortcomings in human evolution to refudiate postulators of an Intelligent Desiger — a critter which is, of course, actually the old literalist Christian dual-omni god in a thin shift of philosophical drag.
The most common retorts to the ID from the world of bad human design if designed and evolved have traditionally involved three body parts or areas: bad backs, fallen arches, and stuffy, infected sinuses. (Appendices have fallen off the chart as we realize they actually do something in us and other critters and their continued existence doesn't refute the IDer.)
I'd like to submit a fourth body part, from personal experience: Teeth.
The good old dog of Intelligent Design didn't even recognize that H. sapiens would invent crop domestication, and then, after finding a way to Sift Wheat from chaff would learn how to sift wheat bran from white flour? Or how to squeeze juice out of a certain cain plant, then boil that juice down to white crystals?
The IDer also didn't anticipate, per an old Isaac Asimov story, that we would live 2-3x as many heartbeats as the typical mammal?
But! The IDer let sharks renew their teeth regularly ... as in regularly ... and individual teeth, not a whole set at once.
And, we don't even have to be sharks. Per this site, elephants, kangaroos and manatees continue to grow new teeth from the backs of their mouths, at least for their molars.
Oh, and beyond IDers?
Why hasn't a laser-based system of burning teeth out, at least above the stem of the root, been invented to replace the barbarity of a yanker?
Editor's note: I plan on at least occasionally doing a second blog post a week on this site this year. A few of these additional posts may be like this one, combining personal experience (at 6-5, born flat-footed, with a tall back that sometimes "goes out," and allegedly "enlarged adenoids" as a kid) of having visited the "yanker" earlier this year.