“The right answer” almost always turns out to be “it depends” (just like any good engineer would say) which is btw why I, like Graeber, would self-identify more anarchist than social democrat or communist.
In all seriousness, the contextually relevant factors tend to be local details. Anarchy embraces the idea that people closest to and most impacted by the issues should be more involved in determining how those issues are dealt with
People upriver will use all of the water.
People in fertile, temperate, not low lying areas will be affected less by climate change and burning fossil fuels.
If the wind blows east, people to the west won't care about smog until made to care by force.
And so on.
there is no right answer for everyone. this is how we know social dems arent the answer. i don't need a mommy state
eh, no, the average communist and average libertarian, if given rational circumstance, would compromise with each other. Current authoritarian power structures stir up division and stonewall progress.
More people find the extremes attractive as the center of the overton window remains stagnant and mutually regressive.
Instead people pretend we should either ALL or NEVER do "social" work.
Social democracy is the right answer, but everyone is either a communist or a libertarian because those are so much simpler and people prefer simple, wrong, answers, to complex correct ones.