Because, you see, according to Bishop James Ussher, god started the creation of the Earth, and all that in it is, on October 23, 4004 B.C. Yeah, that's right. See: http://en.wikipedia.org/wiki/Ussher_chronology
This incredible fallacy of thought forms the basis of the Fundangelicals' world view, including the absurdity known as Creation Science, and leads them to cute little conclusions like, "God created Adam and Eve, not Adam and Steve."
To which one might reply,
"And Cain and Abel, if your brain is not stable."
Or "The Fruit on the Tree is stupidity."
Or "Eve got the blame, she was framed, what a shame."
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