More than a decade ago, then-Secretary of Defense Donald Rumsfeld famously summarized a quandary we face in national security: there are things we know, things we know we don't know, and things we don't know we don't know.
Rumsfeld took flak in the media for his wordplay, but the concept he tried to express is one that we face both in and out of the national security arena.
In health insurance, for example, we know the cost of insurance and the cost of health care are out of control. Chalk that one up in the "things we know" category.
Because insurers aren't required to share their premium...