Al Lawrence's point is well taken in my opinion: arithemetical
conversions just turn people off. The best way to go metric is just to
use it in daily life - no conversions. Set your digital thermometer to
degrees Celsius; set your digital scale to kilograms - it's simple.
Pretty soon you'll have to think hard to interpret Fahrenheit and pounds!
Kaimbridge's point is valid to a certain extent, e.g., with quarts and
liters, but nobody uses cmHg, as far as I know.
Martin Morrison
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On Sun, 22 Mar 2020, Al Lawrence wrote:
Most people hate math and will avoid it at all costs. Most people don't
even bother trying to figure out if buying two quarts of ice cream is
cheaper than buying a half gallon, and many couldn't do it if they
tried. They buy by visual size and assume the bigger size is cheaper
per unit. They buy two liter bottles of soda, half liter bottles of
water and other metric packaging without hesitation, simply by visually
looking at the size without even looking at the net contents. ANY and
ALL conversion tables (that look like math) or any other attempts to
educate them, will turn people off and are counterproductive.
Al Lawrence
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