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So what level of sacrifice should be required of those that don't make itThe same as it has always been for all living things: pain, suffering, and death.
> low wage workers both locally and globally who aren't making it
Pretty sure quality of life is up by pretty much every measure for "low wage workers" both locally and globally.
> none of this is new, but it doesn't have to be this way.
> We know how to solve many of society's problems and we choose not to do so.
You could have made this statement at any point in history, and people might agree with you. If this is the only way it ever has been, why do you think it doesn't have to be this way?
We know in theory. There is a vast, uncrossable gulf between theory and practice, as various communist experiments have shown. There is no known solution to ingroup/outgroup tendency, sociopathy or naked self-interest.
> If the core reason for these things is "human nature" and we shouldn't try to change
We should totally try to change! But we shouldn't expect to succeed, and we shouldn't be surprised or disappointed when awful things happen. We should instead realize that, looking at the past few centuries of history, this is an amazing time to be alive, by every metric. Better to accept humanity the way that it is, space rockets and genocides and all, and realize that it's still a net-positive, than despair that humanity doesn't hold up to some sort of fictional ideal.