I was kidding Hilmar, but somehow the UT swallowed up my "Grinning running and ducking"

alex

>Well, for buying stuff at the supermarket, a precision (max. error) of 10^-2 might be more than enough, but for scientific things, apparently a much greater precision is required - and often achieved. I think that time and length can already be measured at a precision of 10^-7 or even greater, and a similar precision is desired for all 7 basic quantities - and perhaps for many derived quantities as well.
>
>>Yup, this definitely sucks!
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>>As if it wasn't bad enough to go to the supermarket and ask for 0.33Lb of Bologna and getting 0.34Lb, now I have to worry that I might get 0.339999999Lb or 0.34000000001 instead, depending on whether they go with the Avogadro approach of counting atoms, or measuring a magnetic force needed to lift the weight.
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>>Major bummer!