Empiricists believed they had deduced a method by which they could discover a universe of truth: impartial, verifiable knowledge. But the movement of judgment from God to man wreaked epistemological havoc. It made a lot of people nervous, and it turned out that not everyone thought of it as an improvement. For the length of the eighteenth century and much of the nineteenth, truth seemed more knowable, but after that it got murkier. Somewhere in the middle of the twentieth century, fundamentalism and postmodernism, the religious right and the academic left, met up: either the only truth is the truth of the divine or there is no truth; for both, empiricism is an error. That epistemological havoc has never ended: much of contemporary discourse and pretty much all of American politics is a dispute over evidence. An American Presidential debate has a lot more in common with trial by combat than with trial by jury, which is what people are talking about when they say these debates seem “childish”: the outcome is the evidence. The ordeal endures.
Jill Lepore, “After the Fact”, The New Yorker (21 March 2016), 93.