For want of a cyber nail the kingdom fell
An old proverb, dating to at least the 1360’s, states: "For want of a nail, the shoe was lost, for want of a shoe, the horse was lost, for want of a horse, the rider was lost, for want of a rider, the battle was lost, for want of a battle, the kingdom was lost, and all for the want of a horseshoe nail," When published in Ben Franklin’s Poor Richard’s Almanack in 1768, it was preceded by the cautionary words: “a little neglect may breed great mischief”.