Monday, 16 March 2026

Doomsday Bomb

After Doomsday, 11.

I heard the idea of a Doomsday Bomb in my childhood. Poul Anderson's Xoan, interrogated by a Monwaingi, explains it:

"Hordelin-Barjat: 'A set of disruption bombs. Buried deep in the planetary crust...and beneath the ocean beds...strategic locations - You are familiar with the technology. They - the bombs belonging to a given alliance - they would go off automatically. If more than three nuclear explosions above a certain magnitude occurred within the borders of any single member country...all those bombs would explode. At once.'" (p. 93)

By that account, the doomsday response would be avoided if an enemy caused either only three nuclear explosions above a certain magnitude or any number of explosions below that magnitude. But that is not the point. The question is: would a doomsday device be an effective deterrent? No. People are capable of committing suicide. Therefore, someone able to launch a nuclear attack might decide to take everyone else with him. In any case, accidents and all kinds of unforeseen events remain possible. A doomsday device: what a MAD way to try to ensure peace!

The two extra-terrestrials continue their discussion. When Hordelin-Barjat has said, "At once," Kaungtha responds:

"'And would wipe the planet clean. In seconds.'
"Hordelin-Barjat: 'Yes, humane, quick, yes. Of course, that was not the intention. Not anyone's intention. These small powers - they planned to go, oh, very discretely, in deepest secrecy - they would approach the other governments and say, "In the event of general war, we are doomed anyway. But now you will die with us. Therefore you must refrain from making war, ever again." I assure you, the idea was to promulgate peace.'" (ibid.)

Donnan must now determine whether this is a true account of how all life on Earth was ended. Was it murder - or suicide?

2 comments:

Anonymous said...

Kaor, Paul!

I take a certain grim relish in how skillfully Anderson was at hypothesizing the destruction of all life on Earth. But readers would soon read of how Donnan and Sigrid discovered flaws in the reasoning behind that doomsday scenario.

Ad astra! Sean

S.M. Stirling said...

Note that even at the peak of the Cold War in the 1970's and early 1980's, a nuclear war would not have destroyed the human race. Civilization, possibly, but not humans. People tend to overestimate the destructiveness of nuclear weapons -- for example, 90% of the fallout from a ground-burst fusion bomb is gone after two weeks. 90% of the remainder is gone after a year.