Well the most brilliant minds have created a global theory 600 years ago, and one of it's facts stated that the Earth is flat.
So ok 7, yes it is fact
1408? The Renaissance? Well let's see. What was one of the major issues of the Renaissance world view.. I'd say humanism, which puts man in the middle of everything. Which basically means that man should explore, should investigate the world.
Another thingy of the Renaissance is science. It started out with refound interest in Greek and Roman philosophy (mind you, some Greeks thought of the Earth as being round), but quickly evolved into a more critical way of thinking.
If anything the Renaissance is what started the whole idea of science. As you know the Copernican revolution has been quite important. Copernicus was born in 1473. That's not exactly 600 years ago, but still. Copernicus most certainly didn't think the earth was flat. So really, I don't think it's quite the way you want to go with your argument.
We see evolution happening, it's right there FFS. That people on this forum seem to have so much problems condeming creationism only shows how far some of religion's backwards theories have deeply scarred man's ability to think.
Which brings me to my latest point. A global theory only work if there's nothing to counter that theory. In 1408 there might have been no clear evidence that the Earth wasn't flat. Thus the theory at that point worked. Today there is evidence the Earth isn't flat, thus the theory wouldn't work anymore. In our global theory there is no place for creationism, because we see the opposite happening all the time.
But hey, consider me beaten by your "witty" remark.