Yes, it's from a book called "Uncle John's Bathroom Reader" and that book was resting on a closed toilet seat in a nation that only kind of uses the metric system in certain situations... however, you'd be surprised how much you can learn after a single visit to any local fast-food joint!

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[–] -2 points 1 day ago

Maybe you've never heard of decimal inches. Anything under 1/32" people start using 'thou' as in thousandths of an inch.

Subtracting fractions is something you can learn. Children can even do it.

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