Not being a math genius, I have to wonder how Congress would hope to control health care costs by subtracting provisions that do so. A group of prominent economists doesn’t think this adds up, according to Time magazine’s Karen Tumulty. It seems in the horse-trading for votes, negotiators are emasculating some strong cost-cutting provisions that drew praise in the first place. So the economists drafted a letter and sent it to U.S. Senate Majority Leader Harry Reid, D-Nev. One change that rankles is delaying the recommendations of the Medicare cost-control panel until 2019. Another is changing the formula for when the panel can get involved. Initially, it was to act when the rate of Medicare spending outpaced overall economic growth, which happens routinely. The change would only trigger panel activities when Medicare spending growth outstrips the pace of overall health care spending, which is hardly ever.