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How Pirates Of The Caribbean Hijacked America's Metric System (npr.org)

If the United States were more like the rest of the world, a McDonald's Quarter Pounder might be known as the McDonald's 113-Grammer, John Henry's 9-pound hammer would be 4.08 kilograms, and any 800-pound gorillas in the room would likely weigh 362 kilos. NPR explores: One reason this country never adopted the metric system might be pirates. Here's what happened: In 1793, the brand new United States of America needed a standard measuring system because the states were using a hodgepodge of systems. "For example, in New York, they were using Dutch systems, and in New England, they were using English systems," says Keith Martin, of the research library at the National Institute of Standards and Technology. This made interstate commerce difficult. The secretary of state at the time was Thomas Jefferson. Jefferson knew about a new French system and thought it was just what America needed. He wrote to his pals in France, and the French sent a scientist named Joseph Dombey off to Jefferson carrying a small copper cylinder with a little handle on top. It was about 3 inches tall and about the same wide. This object was intended to be a standard for weighing things, part of a weights and measure system being developed in France, now known as the metric system. The object's weight was 1 kilogram. Crossing the Atlantic, Dombey ran into a giant storm. "It blew his ship quite far south into the Caribbean Sea," says Martin. And you know who was lurking in Caribbean waters in the late 1700s? Pirates.

14 of 440 comments (clear)

  1. It's not so bad. by Anonymous Coward · · Score: 5, Funny

    America is inching its way towards the metric system.

  2. Huh? by Richard_at_work · · Score: 5, Funny

    If the United States were more like the rest of the world, a McDonald's Quarter Pounder might be known as the McDonald's 113-Grammer

    Uh, not all that much - in the UK, where the metric system is a required thing by law, the McDonalds Quarter Pounder is *still* called the Quarter Pounder, because thats its product name. Its pre-cooked weight may be given in metric, but that doesn't alter the product name. In France its the Royal for the same reason, thats its product name.

    In the UK, you can still buy a 64Oz Club Hammer or a 16Oz Rubber Mallet, and a 800-pound gorilla is still a 800-pound gorilla - again, the requirement for metric doesn't change these things.

    The speech from Pulp Fiction is cool and all, its just not so much based in reality.

  3. No soft metrics! by duckintheface · · Score: 5, Insightful

    If you really want to see the US move to the metric system, stop using soft metrics. People in the US think the metric system is complicated because they are always being told to convert from English to Metric measure, with the metric being non integral. No, a 9 lb hammer would not be 4.08 kilograms. it would be 4 kilograms. And a Quarter Pounder would be a 100 Grammer. If you want to think in metric, start with integer metric measures and don't worry about conversion.

    I remember when Jimmy Carter was trying to move the US to metric in 1977, I saw a giant sign that said 1 inch equals 2.54 cm. Think Metric! At that moment I knew metric was dead in the US.

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    "He took a duck in the face at 250 knots." -- William Gibson, Pattern Recognition
    1. Re:No soft metrics! by CanadianMacFan · · Score: 4, Interesting

      In your field the centimetre might be dead but it's not a dead unit in the SI system. It's used all of the time in Canada. It's a perfect unit because people can visualize what 1 cm is. It's harder to visualize 10 mm or 0.01 m. And for people that are used to inches it's the closest unit.

      And if the centimetre is dead then the centilitre would be dead for the same reasoning. While not in use in Canada (we use the millilitre) the centilitre is sometimes used for small volumes in Europe. I recently bought some bottles to store home made vinegar and they were made in Italy. The sticker said the volume was 50 cl, not 500 ml. You can see it used on some cans of pop.

    2. Re:No soft metrics! by johannesg · · Score: 4, Informative

      It is dead in that the centimetre is a deprecated unit in the SI system, which is what you should be adopting. The SI base length is a metre, and units derived from the base should be multiples of, or divisions by, 1000. Hence the next unit smaller than a meter should be a millimetre, and the next unit larger should be the kilometre. I work in an engineering design office and we never use centimeters, which is a unit for dressmakers if for anything.

      Nonsense. There's nothing in SI that says prefixes like centi or deci should not be used; if they are a good match for what you're measuring, by all means use them.

    3. Re:No soft metrics! by Hans+Lehmann · · Score: 4, Informative
      The national shift to the metric system was still going strong during the Carter years. It was pressure from the Reagan White House, along with general public reluctance, that killed it.

      https://en.wikipedia.org/wiki/...

      Reagan was dead set on killing many of Carter's goals (energy conservation, the metric system) much like Trump is dead set against anything that Obama ever did.

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    4. Re: No soft metrics! by Immerman · · Score: 5, Insightful

      Neither can most us customary units. What's 1/6 of an inch? 1/3? Ditto cups or pounds.

      The only time you get nice multiples of 3 is when converting feet to inches - and even then you need a nice even number for it to work out. Whats one third of 1'2"?

      Meanwhile, if you're using metric to measure something on the same scale, 1 foot = 300mm (near enough - there's nothing magical about a foot), which is indeed easily divisible by 2,3,4,5,6,10,12,25, etc.

      Most importantly - any math you need to do in metric is simple integer arithmetic, while in US customary you have to constantly juggle mixed fractions in your head to accomplish anything. You can't even fall back to simpler improper fractions because there's not a ruler on the planet with a 317/8ths label.

      What's 1/4 of 37-1/2 inches? Versus 1/4 of 950mm? Or scaling up - you want 7 shelves 13-3/4" apart - what's the total distance? Now try the same thing with 350mm per shelf. If 1/4 inch accuracy is enough, then all your metric measurements can be rounded to multiples of 5. At 1/8th inch, they can all be even. Keeps the math easy. About the only claim I've heard where customary actually has an advantage is that you can specify the precision along with the measurement - but realistically you rarely hear people give measurements of 2-32/64ths or 37-0/16ths

      And frankly, weight and volume are an even uglier mess in customary. Not to mention the endless confusion and headaches caused by the fact that we measure things by weight rather than mass, rather than letting the scale do the conversion into a far more general unit for us.

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      --- Most topics have many sides worth arguing, allow me to take one opposite you.
  4. No. It wont be. by 140Mandak262Jamuna · · Score: 5, Insightful

    If the United States were more like the rest of the world, a McDonald's Quarter Pounder might be known as the McDonald's 113-Grammer, John Henry's 9-pound hammer would be 4.08 kilograms, and any 800-pound gorillas in the room would likely weigh 362 kilos.

    It would be a 100 gram patty, 5 kilo hammer, or half a ton gorilla. There is no need for precise conversion, and a good easy number is what marketing people and idiom pioneers would choose/use.

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    sed -e 's/Chuck Norris/Rajnikant/g' joke > fact
  5. Britain is mostly metric by dow · · Score: 4, Funny

    Britain is metric. We still order a pint of beer and our road signs and speed limits uses miles... but we are metric. My pants are still measured in inches, and most people would order construction materials by the inch and foot, even if the plans were drawn up in millimeters. I could tell you my tyre pressure in psi, but wouldn't be sure about the Kpa. Apart from that though, we are definitely metric.

  6. Talk like a Pirate day! by jfdavis668 · · Score: 5, Funny

    That is why we still celebrate talk like a pirate day! To commemorate the day we defeated the metric system!

  7. Re:10 hour days.. by Applehu+Akbar · · Score: 5, Informative

    I'll consider metrics when the clock, day, and calendar are also 'neatly' divided by 10.

    The first iteration of metric, right after the French revolution, included a ten-hour day of hundred-minute hours, with hundred-second minutes. The months were renamed from the antique Romanesque hodgepodge to be more logique: March became Germinal, the month when things grew, October became Brumaire, the foggy month, and November became Nivôse, the snowy month.

    But people wanted quarter-hours and all the other integer divisible units they were used to, and the month-renamers were reminded that, malheureusement, the new month names only made sense in Paris. In places like Martinique and Réunion, the new names made no sense.

  8. Re: Like someone else illustrated by hey! · · Score: 5, Insightful

    There's a reason these are called "customary" units. They were contrived to be convenient for highly specialized and closely related tasks.

    For example a rod was the typical length of a medieval ox-goad. If you laid out a line 40 rods long, you've got a furlong, which is about the length of furrow a man with a single ox could plow without giving his animal a rest. If you lay out a rectangle 1 furlong by four rods, you have an acre, which is about what he could plow in a day.

    Customary units are far more convenient for the tasks they're optimized for. But it's the modern need to do more complex calculations relating things across problem domains that makes them awkward.

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  9. Re:what if they adopted British system for currenc by Solandri · · Score: 4, Interesting

    It's 12 pence in a shilling, 20 shillings in a pound.

    The reason a foot is divided into 12 inches is because it lets you divide a foot evenly in half, thirds, quarters, sixths, or twelfths (eights are also possible with only a half inch). So dividing a foot into 12 inches lets you hit 3 of the most common subdivisions (half, third, quarter), and 4 of the 5 smallest subdivisions (sixth, missing fifth) using only integers.

    Dividing units into 10 only gives you 1 of the 3 most common subdivisions (half), and only 2 of the 5 smallest subdivisions (half, fifth) using only integers.

    English unit subdivions weren't picked at random. They were selected because they're more practical. A foot is 12 inches for easy subdivision. The English units of volume are based on halving (easy to do if you don't have standardized containers but you do have a scale) - a gallon is 2 quarts, a quart is 2 pints, a pint is 2 cups. An acre is about how much land a peasant could work in a day, and the furlong is defined based on an acre (1 furlong x 1 furlong = 10 acres). Likewise, a mile has 5280 feet because that's 8 furlongs. You'll also note the mile subdivides as integer feet into 10 of the smallest 12 subdivisions (only a 7th and 9th of a mile is not integer feet).

    Until standardized measuring instruments became cheap and commonplace, English units were simply superior. Metric is only superior today because the biggest difficulty in modern usage is doing the math by hand (or in your head), not obtaining tools to measure things accurately. Even on computers, if you're doing sequential calculations without using infinite precision, English units are superior to metric - they accrue less roundoff error. Computers store numbers in base 2, and many English unit conversions will resolve down to at least base 4 before hitting a fraction and thus losing precision in binary representation. Except for a half, metric unit conversions don't fit at all into base 2, so lose precision with almost every calculation.

  10. Came here looking for FSM posts... by ClickOnThis · · Score: 4, Interesting

    We're over 200 comments in, and still no mention of The Church of the Flying Spaghetti Monster's revelation that the cause of global warming is the decline in the number of pirates.

    And there we have it my friends. Not only did pirates cause the adoption of the imperial system in the USA, but the metric system causes global warming! Think of the children!!!eleven

    [Poe's Law disclaimer: yes, I'm kidding.]

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    If it weren't for deadlines, nothing would be late.