The primary point of disagreement over the origin of life is whether or not all life is related ([[universal common ancestry]]), and whether or not variation and natural selection account for ''all'' diversity in life. Creationists argue that there is insufficient evidence of common ancestry to justify belief in it, and argue that many attributes of life are too complex or [[irreducibly complex]] to have evolved. Evolutionists argue that there is sufficient evidence of common ancestry to justify belief, and that life is not too complex to have evolved.
+
The primary point of disagreement over the origin of life is whether or not all life is related ([[universal common ancestry]]), and whether or not variation and natural selection account for ''all'' diversity in life. Creationists argue that there is insufficient evidence of common ancestry to justify belief in it, and argue that many attributes of life are too complex or [[irreducibly complex]] to have evolved. Thus they do not dispute that ''some'' lifeforms are related or that ''some'' [[microevolution]] occurs. They only deny that ''all'' adaptive diversity in life can be explained through evolutuion alone. Evolutionists argue that there is sufficient evidence of common ancestry to justify belief, and that life is not too complex to have evolved.