"My main issue is with the single common ancestor model and the only other viable explanation for the origin of life on earth , creationsim . I see the publication of Darwin 's Origin of Species to be a watershed event that permenantly established the single common ancestor model as the foundation of evolutionary biology ."
"That 's one problem . Creationism ( christian ) is n't the only other `` viable `` ( if you call it that ) system of origin . ( well , evolution is the only viable on in real , but to further the conversation ) , There are many others . Christianity is only one religion , and it 's not even the largest one . All religions have equally `` valid `` systems of origin . ALl of these religions , however , are hopelessly mythical and subjective . Most people set up a bifurcation ; they do n't realise that christianity 's creationism is n't the only other option ."
"main issue is with the single common ancestor model and the only other viable explanation for the origin of life on earth"
"one problem Creationism ( christian ) is n't the only other `` viable ``"