In the creation/evolution debate much misunderstanding and error arise from differing definitions of science and conflicting epistemologies. Creationists rightly hold secularists guilty of distorting the definition of science by injecting it with their epistemology and their assumption of a closed materialistic universe. Conversely, some Christians would inject their belief in God and His miraculous works into scientific hypotheses, calling it "theistic science." Some in the Intelligent Design (ID) movement develop this further, classifying intelligent design as a scientific concept. The application of philosopher of science Karl Popper’s "criterion of demarcation" and the process of "conjectures and refutations" is proposed to correct these errors.