Dennis can't help noting...
Why the Book of Daniel Seems So Darn Accurate
"The impression that predictions made in the distant past were fulfilled accurately is due to the fact that the apocalypses were written after these events had already taken place, but their predictions are presented as though they were made prior to their predicted events."
http://www.cliffsnotes.com/literature/o/old-testament-of-the-bible/summary-and-analysis/daniel