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"Learn from history" is all good and well, but you do actually need to be able to figure out which parts of 'history' truly *are* history, and which parts are weird ideologically-colored retrospectives by a bunch of authoritarians trying to rewrite said history to make themselves look better
(This is a criticism of both aforementioned authoritarians, and of people saying you "should learn from history" but providing no guidance or starting point whatsoever on how to separate truth from ideological conviction)