In a Health Affairs article, Loren Adler and Paul Ginsburg from the Center for Health Policy at the Brookings Institution make the rather counterintuitive claim that Obamacare has actually lowered health insurance premiums. They boldly assert that “average premiums in the individual market actually dropped significantly upon implementation of [Obamacare], according to our new analysis, even while consumers got better coverage.” Los Angeles Times columnist Michael Hiltzik calls Adler and Ginsburg’s article an “important” new “study.”

The only problem with their analysis is that it’s erroneous.