The Enlightenment is often celebrated as a period when reason, science, and intellectual curiosity transformed European society. Brilliant thinkers challenged tradition and sparked revolutions in philosophy and politics. Yet, even in this so-called Age of Reason, many clung to startlingly bizarre beliefs—from mystical sciences to peculiar superstitions. This list reveals twenty of the most unusual ideas that persisted among Europeans, showing how even the brightest minds sometimes struggled to separate fact from fiction. Prepare to be surprised by the curious contradictions of this fascinating era.
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