Simpsons Logical Fallacies: Post Hoc Fallacy

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Open captions change to closed captions during second half of video. Use of copyrighted content is protected by fair use which says that copyrighted content can be used so long as commentary is given. Definitions of logical fallacies come from Practical Argument by Laurie G. Kirszner and Stephen R. Mandell.

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I love how Lisa tries to brush Homer off when he tries to buy her rock, but then she shrugs and takes the money

Lv-nqqz

And this episode is why I could define the word specious at 5 years old. Also there was a Ducktales episode that fully teaches how hyperinflation can happen. Cartoons were educational as hell back in the day.

tonyj

Scary how many times you see, in politics, the media (and very much social media), fallacies used to push a certain viewpoint.

JohnSmith-gdfg

Here’s one. 5g towers went up right around the time covid-19 was becoming more relevant, therefore they are connected.

oswald_

Every writing professor needs to show this to their lectures

wetwilly

I like this clip as an example of affirming the consequent. Lisa's counter example back fired. The fact there were no bears in town does not prove the patrols were working any more than the fact that there were no tigers proved the rock repels tigers.

aaronfairbourn

That said, bears in general avoid human presence - and with a lot of noisy vehicles nearby, it's entirely possible the bear patrol would drive a bear away, if there was one.

Lisa does a better job of explaining this fallacy.

Remember, it's also a fallacy to assume they are unrelated. Detectives do not believe in coincidence.

Tolinar

Except that bear patrol has something to do with keeping bears away, after all it's their purpose on paper,
while a rock has no bearing to tigers.

Obviously the bear patrol doesnt constitute conclusive evidence for not having any bears around
as they may or may not be doing their job, it's evidence (weak evidence or not) nonetheless,
while a rock has nothing to do with keeping tigers away (it's no evidence at all).

Treating those 2 things as if they are EXACTLY the same is a mistake as well.

virusmyth

A conversation explaining this to someone reminds me of the time when I tried to explain the difference between "Possibility" and "Probability".

berner

Can somebody tell me which episode is this it's urgent thanks in advance

joellemona

@Colburn Classroom Hey there! I believe this is actually a "Cum hoc ergo propter hoc", where two events are assumed to be causally related because they appear together. I know there's no point in debating where'd be the line between Things ocurring previous and after vs things ocurring together, but i think that if we call Lisa's example a Cum Hoc, we leave free room for a more specific Post Hoc which would be:
"Tigers have occasionally appeared in the neighbourhood, but since I picked up this stone and said a magic spell, not a single one has gotten near".
Maybe i'm overanalizing stuff. And maybe i'm wrong :D anyway great vids, and I'd love to hear your thoughts on this. keep it up!

martisole

Do those anti tiger rocks really exist? I kinda want to buy one, but there aren't any Tigers where I live so it'd be more of a novelty item more than anything.

Edit: will these rocks negatively affect all cats or just tigers? There are cats in my area and I don't want to chase them away.

BoleDaPole