questionsdo you use pi in your work or otherwise in your…

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No, but I just tried to tell a joke based on Schrödinger's cat to fellow office workers, and of course no one knew what I was talking about. When you have to share your own very limited understanding of quantum mechanics in order for people to understand your punchline you've kind of lost your momentum.

The joke was "Schrödinger's tea", wherein I am prone to forget whether or not I left my teacup in the microwave, so every time I pass a microwave there both is and is not tea inside until I open it and look. It's an imperfect analogy but people who are familiar with the story always laugh at it.

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Pi comes up in engineering from time to time for anything that deals with a circle, but I use it more in grad school to derive stuff. But yeah, you need it whenever you're doing circular things. You just end up rounding stuff to the nearest value that you can work with (i.e. tools can't machine something to 9 decimal places.)

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I use it to help my kids with their homework.

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No, it is one of the many things I learned in math that I've never had to use in real life. It's one of life's little truths that parents can't admit to their children as they fight about homework -- "yes, it's true, you probably won't ever have to use this in your real life."

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Every now and then I will have to calculate the cross-sectional area of a pipe but not very often.

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2 or 3 times every early summer people will want sand delivered to put under their pool. I have to determine how many yards of sand it will take to make a circle xx feet in diameter and xx inches deep. That's it though.

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I use Pi quite often. If I had to wager a guess, I'd say about 3.14 times per day.