this post was submitted on 05 Apr 2026
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The evilest person who committed the most horrendous deeds, propagated the worst ideas, or was responsible for other moustache-twirling affairs.

Anyone who is currently alive does not count.

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[–] AnchoriteMagus@lemmy.world 46 points 3 days ago (5 children)

Thomas Midgley, Jr

Invented CFCs like Freon, which caused the hole in the ozone layer, and then later went on to pioneer the use of lead in gasoline, which is estimated to have resulted in the cumulative loss of millions of IQ points from humanity during its use, not to mention lead-derived cancers and other illnesses.

Possibly the single greatest negative contribution to the environment and humanity.

[–] withabeard@sh.itjust.works 30 points 3 days ago (2 children)

Did the most damage... But I'm not sure he's villainous. Just competently dangerous. Happy to be corrected but I thought tmjr was trying to improve the world. He just got massively unlucky... Multiple times.

[–] Denjin@feddit.uk 11 points 3 days ago

The effects of lead poisoning were already very well known, 8 people died of lead poisoning at DuPont during the development and Midgely himself suffered the effects of lead poisoning after "proving" his compound was safe in a public demonstration.

He absolutely knew there would have been widescale negative health effects if they continued to push the product on the market. He also knew about widely available alternative "anti-knocking" agents they could have used but they were unable to be patented and so there was no profit.

He is absolutely a case of someone who simply did not care about the consequences of his work beyond what profit could be extracted.

CFCs are a slightly different issue because no one could have reasonably anticipate their effects on the atmosphere and he was long dead before those effects were starting to be felt.

I don't believe he would have stopped developing them even if he did know however.

The universe got the last laugh however after he became entangled in self made contraption to help him after he developed polio, suffocating him.

[–] Klear@quokk.au 16 points 3 days ago

Yeah, I'm pretty sure he invented freon use in refrigeration because he knew he fucked up with the lead in gasoline and wanted to do something good to outweight that.

[–] mechoman444@lemmy.world 4 points 2 days ago

I consider this man to be the worst individual in all of human history. Maybe the single worst human to ever live on the face of the planet.

What makes him this bad? He knew. He knew what leaded gasoline was doing and what freon would do and he did it anyway to help cooperations make a little more money.

There are some pretty bad people under the post. But this guy... Man.

[–] yakko@feddit.uk 8 points 3 days ago (1 children)

He was just a feckless chemist, better to blame the DuPonts, GM, and other moneyed interests who have depended on such useful idiots and the corruptability of the US government since its earliest days.

[–] AnchoriteMagus@lemmy.world 5 points 3 days ago (1 children)

To address both you and the person below you: he deliberately gave himself lead poisoning on national television by inhaling the concentrated vapor of leaded gasoline for over a minute. He did this not because he was ignorant of the health dangers of lead (he had already had lead poisoning TWICE BEFORE), but because he was purposefully misleading the public.

[–] yakko@feddit.uk 1 points 3 days ago

I didn't mean to say he was innocent of anything. His crimes are well known; but they were done in service of moneyed interests who were the real decision-makers behind it all.

[–] WorldsDumbestMan@lemmy.today 3 points 3 days ago

He might have lead to Boomers being such psychopaths, including the later greatest villians.

He DID do it on purpose too!

[–] Admetus@sopuli.xyz 1 points 3 days ago

This is definitely a moustache twirling villainous affair.