Intelligent design theorists have learned a few lessons from the failures of their predecessors and have devised a more sophisticated strategy to compete head on with evolution. One of the main things they [intelligent design creationists] have learned is what not to say. A major element of their strategy is to advance a form of creation that not only omits any explicit mention of Genesis but is also usually vague, if not mute, about any of the specific claims about the nature of Creation, the separate ancestry of humans and apes, the explanation of the earth's geology by catastrophic global flood, or the age of the earth - items that readily identified young-earth creationism as a thinly disguised biblical literalism.