If someone is not willing to accept evolution as fact, supported by mountians of evidence like fossils, transitional forms, intermediate stages in descendents, homologies, common structures, developmental biology, cellular evidence, molecular evidence, strata layer and radioactive decay dating, geographical species isolation, ecological adaption, natural selection, and evidence by example and experiment, then there is really no point in trying to have a rational discussion with them on the topic. They are choosing to deny history and fact to serve a higher need they have to believe in the creation myth.