Expand, please. Assuming the modern world stems from a colonial long event, why would that imply that "a total blindness to what came before Europeans" is only to be expected? Or, say (if we tone down the hyperbole a little) a large degree of blindness.
A large degree of blindness is a better way to phrase things, certainly.
At the risk of tautology, post-colonialism isn't centrally concerned with pre-colonialism, because, well, it's post-colonialism, not pre-colonialism. It's concerned with a very particular world, our modern world, and the interlocking parts within it.
Now, what I think Konqvistador (heh) meant - although I could of course be wrong - is that post-colonialists are always going around denouncing Europe and never the Celestial Empire or Four Regions or Triple Alliance or what have you, whi...
I wanted to bring attention to two posts from Razib Khan's Discover magazine gene expression blog (some of you may have been readers of the still active original gnxp) on the polemic surrounding Pinker's The Better Angels of Our Nature.
Relative Angels and absolute Demons (and the related But peace does reign! )
I generally agree with some of his arguments, but found this quote especially as summing up some of my own sentiments: