At 14 I discovered girls. At that time dancing was the only way you could put your arm around the girl. Dancing was courtship.
We believe that electricity exists, because the electric company keeps sending us bills for it, but we cannot figure out how it travels inside wires.
And beyond that, the next issue is how do we guarantee one of these weapons, not necessarily this missile, but nuclear weapons ends up in the hands of Al Qaeda or some other terrorist group.