One of the points I have been making on this blog is that darwinism is not just science, it is a philosophy tantamount to a world-view. And world-views affect how we view reality. (Perhaps world-views should be called reality-views.)
A good overview of the argument that darwinism has lead to the incoherence of post-modernism may be found here.
Money quote: "Darwinism undercuts the very possibility of rational truth".
Now that should get the ball rolling!
But please at least skim the article before venting!
And that's the way the I-believe-in-rationality Ball bounces.