As in, "It goes to the extent of preposterity so that we talk about it. And then we find our own ways to develop our country."
So what ya gotta do is, exaggerate the outcome and thus raise the dust; then using all the resultant air pollution, you rebuild your country out of not-so-thin-air. Writing histories of these brave deeds is what constitutes preposterity.
*What a lovely word it is. It combines the past in the 'pre', the future in the 'post' (though it recalls the past at the same time) and hankers for a time before posterity.