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A wonder, then, why it hasn't been developed to a more endurant level. Humanity starts a "new level" of something whenever there's the abundance of resource and workforce for it, isn't that true? Maybe we're just waiting for graphene to become mass product... but then, we'll just suffer over it not working in zero-G or something. :) Fluid bearing made no sense to me 'cause it's late and my brain is tired. If you could ELI5 it for me, that would be appreciated.