Can the concept of value help spur the fundamental changes that our health care sector so desperately needs? In a guest post on the Harvard Business Review blog, Commonwealth Fund president David Blumenthal and senior researcher Kristof Stremikis write that while "putting value at the forefront of health care reform may seem obvious and non-controversial," a number of challenges need to be met before we can "turn the promise of value measurement into the reality of better care at lower cost."