Comment on Why in America is .08 the legal limit for drunk driving? How come it's not an even 0.10? Who decided at what level being drunk starts? Then 4 beers of 12oz's is 0.08 why is it that small?

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howrar@lemmy.ca ⁨2⁩ ⁨days⁩ ago

Why does even-ness matter?

Because significant figures.

0.1 means you have a margin of error of ±0.05 (i.e. the true value is between 0.05 and 0.15).

0.08 means the margin of error is ±0.005 (i.e. the true value is between 0.075 and 0.085).

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