People do that sort of thing every day, without ever stopping to reflect on the consequences.

But what could you do about bombs dropped on you from the air? Especially in the dead of night. The idea of being killed in your sleep by an enemy you'd never even seen was horripilating.

The traveler on this road stands a fair chance of missing his connecting links in the great railway chain which interthreads the continent east and west […]

Humans breed in ways quite similar to those of animals; and if humans misbreed, the results are misbreeds.