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About 2000 years ago, a Heron of Alexandria invented a machine gun that fired arrors. Can you add it and his other inventions. 66.62.75.132 (talk) 18:33, 7 August 2021 (UTC)
- The invention is ascribed here to one Dionysius of Alexandria. I did not see a reliable source one way or another. --Lambiam 18:59, 7 August 2021 (UTC)