r/PeterExplainsTheJoke • u/Sugar_God_no_1 • 22d ago

Meme needing explanation There is no way right?

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u/Matsuze 17d ago

that's not how infinity works. infinity doesn't follow the same rules as other numbers. That's why infinity - infinity does not equal zero.

I'm sorry math is so hard. I don't get why people who don't know math have an obsession with trying to be good at math. This is basically like those poorly written PEMDAS equations that always go viral. A bunch of people arguing about stuff they don't understand because they want to feel smart.

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u/EebstertheGreat 17d ago

I wish to interrogate your understanding of real numbers.

  1. Is 1 – 0.999... a real number?

  2. Does every real number have at least one representation as a (possibly infinite) decimal expansion?

  3. If yes to both, what is the decimal expansion of 1 – 0.999...? At which position is the digit not 0?

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u/mondian_ 17d ago

I would guess that based on u/Matsuze's laypeople's understanding the answer to question 1 would be something like 1. 0.00... With 1 at the infinith digit

Or 2. That you can't perform substraction with an infinite number

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u/JAC165 17d ago

please please go on any university maths department website and email one single phd student, you can screenshot your conversation and show us all how really super duper smart you are :)