In physics, a unified field theory is an attempt to explain with a single hypothesis the behavior of several fields. Its political corollary is the Cupcake Postulate, which explains everything, from Missouri to Iraq, concerning Americans' comprehensive withdrawal of confidence from government at all levels and all areas of activity.

Washington's response to the menace of school bake sales illustrates progressivism's ratchet: The federal government subsidizes school lunches, so it must control the lunches' contents, which validates regulation of what it calls "competitive foods," such as vending machine snacks. Hence the need to close the bake sale loophole, through which sugary cupcakes might sneak: Foods sold at fundraising bake sales must, with some exceptions, conform to federal standards.

What has this to do with police, from Ferguson, Missouri, to your hometown, toting marksman rifles, fighting knives, grenade launchers and other combat gear? Swollen government has a shriveled brain: By printing and borrowing money, government avoids thinking about its proper scope and actual competence. So it smears mine-resistant armored vehicles and other military marvels across 435 congressional districts because it can.