Donald MacKenzie

In July 1785, Thomas Jefferson, then American Ambassador to France, paid a visit to the dungeon of the Château de Vincennes. Its three-metre-thick walls had previously imprisoned Diderot and the Marquis de Sade. Now, however, it housed the workshop of a gunsmith, Honoré Blanc, and a dozen assistants. As Jefferson watched, Blanc sorted into bins the pieces of 50 musket flintlocks: ‘tumblers, lock plates, frizzens, pans, cocks, sears, bridals, screws and springs’. From the parts in the bins, Blanc assembled several working gunlocks.‘

It always helps to see the ordinariness of things. Despite the end of the Cold War, nuclear weapons remain very un-ordinary in the popular mind. The world’s nuclear arsenals still contain over twenty thousand warheads. Yet nuclear weapons are an ordinary technology and can, like other technologies, become obsolete. They can, perhaps, be abolished. There is even a meaningful sense in which nuclear weapons can be disinvented.