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[–] 2 points 5 months ago (1 child)

Well, permanent because if it gets destroyed it you can't call it successful, and utopia because you need an ideal to measure success against even if its not realistically achievable.

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  • [–] 3 points 5 months ago (1 child)

    Were carrier pigeons not successful? Just because something is discontinued, doesn't mean it was not successful for its time when it was deployed?

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