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felipec  unbelief  1yr ago (felipec.substack.com)   3252 thread views

2+2 = not what you think

felipec.substack.com

Changing someone's mind is very difficult, that's why I like puzzles most people get wrong: to try to open their mind. Challenging the claim that 2+2 is unequivocally 4 is one of my favorites to get people to reconsider what they think is true with 100% certainty.

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2+2 (standard arithmetic) is different than 2+2 (mod 4), and 4 (standard arithmetic) is different than 4 (mod 4).

And

Is that an admission that what most people think (4 (standard arithmetic)) is different than (4 (mod 4))?

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