President Obama spent his formative years in academia, so he’s no doubt familiar with postmodernism, the literary theory that rejects objective reality and insists instead that everything is a matter of interpretation and relative “truth.” At any rate he’s running the first postmodern Presidential campaign, now organized almost exclusively around allegations about his opponent that bear no relation to the observable universe. …

So Mr. Romney is to blame because of decisions he didn’t make at a business he didn’t run that may or may not have set in train a series of random unconnected events many years apart that included Ilyona Soptic’s illness. Even more culpable is the butterfly in Peking that flapped its wings and forever altered the course of history.

At least the Obamateers didn’t suggest that Mr. Romney was the direct biological cause of her cancer. Perhaps they are saving that charge for October, given that a routine Democratic theme is that Republicans are in favor of killing people. After all, the most substantive liberal critique of Paul Ryan’s budget is an ad depicting his stand-in literally flinging an old lady in a wheelchair off a cliff.