Assuming the Lord Pilot was correct in saying that, without the nova star, the Happy Fun People would never be able to reach the human starline network
…and assuming it’s literally impossible to travel FTL without a starline
…and assuming the only starline to the nova star was the one they took
…and assuming Huygens, described as a “colony world”, is sparsely populated, and either can be evacuated or is considered “expendable” compared to the alternatives
...then blow up Huygens’ star. Without the Huygens-Nova starline, the Happy People won’t be able to cross into human space, but the Happy-Nova-Babyeater starline will be unaffected. The Happy People can take care of the Babyeaters, and humankind will be safe. For a while.
Still not sure I’d actually take that solution. It depends on how populated Huygens is and how confident I am the Super Happy People can’t come up with alternate transportation, and I’m also not entirely opposed to the Happy People’s proposal. But:
If I had a comm link to the Happy People, I’d also want to hear their answer to the following line of reasoning: one ordinary nova in a single galaxy just attracted three separate civilizations. That means intelligent life is likely to be pretty common across the universe, and our three somewhat-united species are likely to encounter far more of it in the years to come. If the Happy People keep adjusting their (and our) utility functions each time we meet a new intelligent species, then by the millionth species there’s not going to be a whole lot remaining of the original Super Happy way of thinking—or the human way of thinking, for that matter. If they’re so smart, what’s their plan for when that happens?
If they answer “We’re fully prepared to compromise our and your utility functions limitlessly many times for the sake of achieving harmonious moralities among all forms of life in the Universe, and we predict each time will involve a change approximately as drastic as making you eat babies,” then it will be a bad day to be a colonist on Huygens.
Assuming the Lord Pilot was correct in saying that, without the nova star, the Happy Fun People would never be able to reach the human starline network …and assuming it’s literally impossible to travel FTL without a starline …and assuming the only starline to the nova star was the one they took …and assuming Huygens, described as a “colony world”, is sparsely populated, and either can be evacuated or is considered “expendable” compared to the alternatives
...then blow up Huygens’ star. Without the Huygens-Nova starline, the Happy People won’t be able to cross into human space, but the Happy-Nova-Babyeater starline will be unaffected. The Happy People can take care of the Babyeaters, and humankind will be safe. For a while.
Still not sure I’d actually take that solution. It depends on how populated Huygens is and how confident I am the Super Happy People can’t come up with alternate transportation, and I’m also not entirely opposed to the Happy People’s proposal. But:
If I had a comm link to the Happy People, I’d also want to hear their answer to the following line of reasoning: one ordinary nova in a single galaxy just attracted three separate civilizations. That means intelligent life is likely to be pretty common across the universe, and our three somewhat-united species are likely to encounter far more of it in the years to come. If the Happy People keep adjusting their (and our) utility functions each time we meet a new intelligent species, then by the millionth species there’s not going to be a whole lot remaining of the original Super Happy way of thinking—or the human way of thinking, for that matter. If they’re so smart, what’s their plan for when that happens?
If they answer “We’re fully prepared to compromise our and your utility functions limitlessly many times for the sake of achieving harmonious moralities among all forms of life in the Universe, and we predict each time will involve a change approximately as drastic as making you eat babies,” then it will be a bad day to be a colonist on Huygens.