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why does the us refuse to use the metric system why does the us not use the metric system why does the us not use the metric system reddit why do the us not use the metric system why does the united states not use the metric system right now why should the us not use the metric system why does the us not switch to the metric system why does america not use the metric system reddit why should the us not switch to the metric system why did the united states not switch to the metric system when england had switched
