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From @fresh_42's Insight

https://www.physicsforums.com/insights/10-math-things-we-all-learnt-wrong-at-school/

Please discuss!

This is funny because you currently read this text on a device that uses ##1+1=0.## If we switch off a light we use it because switched twice doesn't change anything, i.e. equals zero. Our clocks measure hours from ##1## to ##12## and start again after that. So obviously ##12=0## and ##3\cdot 4 = 2\cdot 6 = 0.## See, it depends on the context. There are all kinds of number systems: binary for the computer, duodecimal for clocks, the Babylonians used sexagesimal, and the Mayas used cycles of ##1,872,000## days. You won't convince your local grocery store that twice as much is actually zero, but you use it while you read those lines.

https://www.physicsforums.com/insights/10-math-things-we-all-learnt-wrong-at-school/

Please discuss!

This is funny because you currently read this text on a device that uses ##1+1=0.## If we switch off a light we use it because switched twice doesn't change anything, i.e. equals zero. Our clocks measure hours from ##1## to ##12## and start again after that. So obviously ##12=0## and ##3\cdot 4 = 2\cdot 6 = 0.## See, it depends on the context. There are all kinds of number systems: binary for the computer, duodecimal for clocks, the Babylonians used sexagesimal, and the Mayas used cycles of ##1,872,000## days. You won't convince your local grocery store that twice as much is actually zero, but you use it while you read those lines.

## 12= 0? 24=0? 60=0?

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