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Creationists are many things, few of them good, but the one thing they're not is stupid. And they've stumbled across some genuine philosophical conundrums -- most pointedly, the inherent and perhaps irreconcilable conflict between our biological understanding of homo sapiens as subject to the processes of nature and natural selection, and our political understanding of human beings as uniquely conscious, free agents with certain inalienable rights.
What many creationists seek is the unity of religion, science and politics, with religion forming the moral and philosophical framework for a society; science contributing fact-based knowledge, intellectual authority and epistemological clarity to that framework; and politics both reflecting and enacting the perfect harmony of the first two. The result would be something like Plato's infamous Republic, only without the need to base the society on a "noble lie."
Of course, this idea is based on the fetishization of science as the temporal form of Ultimate Knowledge, not on a working understanding of scientific method.