General," said the commander of the delinquent brigade, "I am persuaded that any further display of valor by my troops will bring them into collision with the enemy.
You see, wire telegraph is a kind of a very, very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? And radio operates exactly the same way: you send signals here, they receive them there. The only difference is that there is no cat.