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I'm familiar with reddit/AskHitorians. Any other good subreddit like that one that you know of?

• Debug_Overload 6y ago
  r/askscience might be the closest one in terms of strict moderation and not tolerating off-topic/joke/anecdotal (or otherwise unscientific, obviously) stuff; you'll mostly find high-quality answers submitted by the verified panelists of the sub.