The Tollan civilization were humans taken from earth millennia ago that developed science faster than us and ended up being one of the most advanced races in the galaxy. They gave a source of limitless energy to more primitive aliens on a nearby planet in their solar system (think Mars versus Earth) and those aliens weaponized it and blew up part of their own planet. It messed up the Tollan's own planer's orbit, so they had to find a new planet and now don't share any technology.
Do you think humanity would suddenly come together in understanding and peace to explore the stars and advance ourselves... or do you think people who already have enormous wealth and power would keep themselves positioned such that their influence and control grows?
Yeah...
We're not fucking worthy of that kind of technology. Neither are any other species.
Its the struggle to acquire knowledge and power that gives you the wisdom to use it for beneficial purposes. This is the whole core of Ian Malcolm's speech to John Hammond in Jurassic Park (the book), but also to a lesser extent, the movie.
I'm optimistic that if it happened to us, even in the limited hypothetical you presented, we'd rapidly transform as a species for the better. Now, if that would've happened 50 years ago or longer...not so optimistic.
I think that exactly what happened 2000 years ago. Unfortunately we just failed to understand most of the info and it got lost "in translation" due to communication barrier. The good thing is they did promise to return and try again when hopefully our development and ability to understand would get a bit more advanced.
That's not strictly true throughout the series (I'll avoid any spoilers here), in many situations, civilizations are denied certain technologies by the Culture in the novels.
I just finished reading the entire series and there's always quite a bit of skepticism from both members of the "Culture" and members of other civilizations as to the value and positive impact of The Culture's intervention/meddling.
I'd say that Banks is pretty even handed with that, although he usually seems to fall on the side of "Special Circumstances."
All that said, it's definitely worth the read.
There is always a chance that the Higher Civilization missed something - culturally, scientifically or artistically speaking. Letting such civilization emerge, and help them ascend when they reach certain level seems to be saner and safer approach.
The Higher Civilization might've been stuck in local maxima, adding such random element might let the Higher Civilisation absorb the best parts and move towards another, better local maxima.
Coercion is like the Indian boarding school programs in the Pacific Northwest. Taking Indian children away from their parents and beating them if they spoke their native languages, with the goal of wiping out the culture and forcing assimilation.
I'm cool with the Amish method but not the boarding schools.
What I'm saying can definitely be abused or misinterpreted if someone wants to justify atrocities, but that's their negative interpretation and their choice. The positive interpretation here would be that I'd prefer a choice for anyone who wants to be Amish, as long as being Amish doesn't mean that you're completely trapped in that society if you're born into it. Some ideologies trap the mind.
I don't think plague would be an issue - viruses require proteins to be similar to attach and reproduce, and bacteria require nutrients to be the same. And as for resources? Asteroid mining will get you more water, minerals and metals.
But territory - terraforming might be really difficult or take too long. If aliens need an oxygen/CO2/nitrogen atmosphere and liquid water, Earth could be tempting, even if the plant/animal life is useless to them.
If territory isn't an issue, maybe we'd just be friends or anthropological curios.
But yeah I agree that there's very little our planet has that an alien civilization would want. The only reasons I could see for war would be some sort of pre-emptive response ("some day they will be able to attack us, let's wipe them out before they can") or an ideological conflict. Maybe they have a religion/ideology/culture that sees us as needing to be destroyed. Maybe if they see us as a lesser race to be exterminated, like the Nazis. Or maybe we are evil in their morality. There's the sci-fi staple of seeing mankind as inherently violent and warlike, or polluting, but also more exotic things. Maybe they are immortal and don't reproduce, and see us and our potential for expansion as a sort of cosmic cancer. Maybe they are photosyntheic beings, and see anything that lives by consuming other life as a threat. But I think those are unlikely.
At the very least I think that they wouldn't wipe us out on sight. If they did have strong opinions on religion or forms of government, it would likely take years of contact and dialogue to even figure out we were in disagreement. Even then diplomacy and diplomatic pressure would probably be used long before military force.
There’s some post-colonial baggage to unpack there.