Other than the denial that the scientific method is a valid method of obtaining knowledge (a purpose Creationism shares with Post-Modern-Deconstructionism), what is the purpose of Creationism? Why do Creationists try so hard to get scientists not to teach their (currently accepted as) best theories?
You state the facts wrongly here. Creationism has the effect, not the purpose, of denying that evolution engages in true science. I know you're smarter than that. You've posted some great challenges to me on this thread, BTW. Thanks. Really.