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#RealLife non-math example that illustrates why function composition is not commutative. #MTBoS #ITeachMath

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Tim Brzezinski

22,169 subscribers

27,011 Aufrufe • vor 3 Jahren •via X (Twitter)

#RealLife#MTBoS#ITeachMath
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5 Kommentare

Profilbild von Dan Schroeder
Dan Schroedervor 3 Jahren

@a_freeparticle When I was in grad school one of my housemates (a math student) was once sitting at the dinner table when he lifted the bottle of salad dressing, paused, and said: "The operations of shaking the bottle and removing the cap do not commute."

Profilbild von Muhammad Fahad
Muhammad Fahadvor 3 Jahren

Nice 👍

Profilbild von Tim Brzezinski
Tim Brzezinskivor 3 Jahren

Thank you! 🙂

Profilbild von EmacsTheViking
EmacsTheVikingvor 3 Jahren

Finally I get why a monad is not a burrito!!! It's because all this time it was actually a laundrette, and the identity function is putting dry, dirty clothes into the dryer. No wonder I didn't get Haskell sooner. Thanks for this.

Profilbild von chrïs
chrïsvor 3 Jahren

depends on the property for example, if the property is colour then the output is invariant to composition.

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