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Mars Orbiter Lost Over Metric Conversion Error

Buxley writes "NASA is reporting that they've found the likely cause for last week's loss of the Mars Climate Orbiter. It seems one of the engineering teams was using English units of measurement while another team was using Metric units. Getting this straight is rather important when designing navigation sytems for interplanetary spacecraft, one would think." A lot of people sent this one in; thanks to all. And if this event doesn't prove that it's time for the U.S. to go 100% metric, I don't know what will. Oy!

3 of 623 comments (clear)

  1. Re:the right tool for the job by Rational · · Score: 5

    It is much easier to imagine and understand what it means to say "I am six feet tall" than it is to say "I am one hundred and eighty three centimeters tall" or "I am one point eight meters tall".

    The hell you say. It may be easier for you because you have been raised used feet and inches, but there is definitely nothing intrinsically more intuitive about it.

    The Fahrenheit scale uses (aproximately) the normal human body temperature as 100. Since most real world temperatures (like weather) are done around this temperature and above 0 (the temperature of salted ice), the Fahrenheit scale is a more convenient scale for human life.

    Again, I take that you mean a more convenient scale for Americans. From my point of view, the Fahrenheit scale is a counterintuitive horror. After ten years of exposure to the Imperial system, I can deal with inches, miles, gallons and pounds, but I still can't get my head around Fahrenheit. Besides, the most significant transition point in "the real world" is that of liquid water to ice. The Celsius scale springs from this. How much more intuitive you want to get?

    I guess we all have our cultural biases and try to justify them, but from a standpoint of making sense, the Imperial System doesn't have much of a leg to stand on, definitely not in the 21st Century. Take my word (and that of all the other Europeans in /.) for it, the Metric system does work extraordinarily well in "everyday" situations.

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    "Be nice, veer left, and never stop thinking" Iain Banks - Walking On Glass
  2. Re:the right tool for the job by Anonymous Coward · · Score: 5
    I am amazed by the utter stupidity of your post.

    Don't you realize that all your pseudo-facts are completely biased by your education?

    The English system is focused on the idea that humans only want to / can deal with multiples of two or three things comfortably.
    Then metric wins, as there is only 1 "thing" to measure against, and 1 scale. Orthogonal design. Good.

    It is much easier to imagine and understand what it means to say "I am six feet tall" than it is to say "I am one hundred and eighty three centimeters tall" or "I am one point eight meters tall"
    Guess what I am 1m85cm tall and I "know" what 1m50cm tall means or 1m90cm tall. Why? because I have been raised in a metric country. 6ft. 1in doesn't mean anything to me.

    The English units of volumes are done in binary (and a couple, like tablespoons, in ternary). One foot equals twelve inches and one gross equals 144 objects because these are useful numbers: lots of other numbers divide them. Humans don't do floating point arithmatic with great ease. Use a system that bumps everything up into integers.
    Are metric-raised people superior then ? Because metric-raised handle non-integeral measures quit well, thank you. Ten has always been a stupid choice for the base of a number system.
    I would gladly agree with you but for a small detail: every day numbers are expressed in base 10, which makes handling a base-10 measurement system so much easier. Base 10 is drilled into everyone's mind since their kindergarten. SARCASM and yes base 60 is so much easier, no wonder it's so easy to teach children how to read a clock ! /SARCASM

    [Comparisonn of Fahrenheit versus Celsius]
    Again, you are biased by your upbringing. Metric-people have none of the problems that you attribute to the Celsius scale. And I boil water multiple times per week, I have a very good understanding of what 100C means. I have ice in my freezer and understand what 0C means. I certainly do not have a good perception of my body temperature, so 100K does not mean anything to me.

    t ranks right up there with the prostate as one of the fundamental ways in which humans are "designed". We should've been built with 12 fingers instead of 10. We'd all be much better off.
    Yeah right. We'd be better off without morons like you.

    Reality check: metric is as easy to use (or easier) as english. You are in denial because of your education, stop deluding yourself with BS explanations of why english is "superior" or "more natural".

  3. Well... by Darksky · · Score: 5

    .... these people aren't exactly Rocket Scientists after all..... oh, wait...nevermind....

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