The benefits of transparency are hard to explain. Bit by bit, we’re improving public oversight of government, I’ve been heard to say, implying more libertarian‐​friendly outcomes—never quite sure that I’m getting my message through.

Now comes a comment on transparency that articulates its importance better than I ever could. It’s Obamacare architect Jonathan Gruber describing how lacking transparency allowed the president’s signature health care regulation to pass.

A gaffe in Washington is when somebody tells the truth. Thanks to this one, more people may understand how non‐​transparent government undercuts their freedoms. Insisting on government transparency can protect them.