Found a good quotation from philosopher Simon Blackburn on "Butterflies and Wheels". Originally it appeared in the Oxford Dictionary of Philosophy, in the "Postmodernism" entry:

While the dismantling of objectivity seems to some to be the way towards a liberating political radicalism, to others it allows such unliberating views as the denial that there was (objectively) such an event as the Second World War or the Holocaust...The postmodernist frame of mind...may seem to depend on a cavalier dismissal of the success of science in generating human improvement, an exaggeration of the admitted fallibility of any attempt to gain knowledge in the humane disciplines, and an ignoring of the quite ordinary truth that while human history and law admit of no one final description, they certainly admit of more or less accurate ones...