Masters Digital Design®
CREATIVE GENERAL INTEREST PERSONAL

A major re-design is definitely in order.  Time to dust off the cobwebs and re-launch the site in January 2017.
But in the interim, something to think about ...


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WHY YOU CAN GIVE ONE EQUATION TO 6 DIFFERENT
PEOPLE AND GET 6 DIFFERENT ANSWERS.



The rules aren't new … they've been around since the early 1600’s.
PEDMAS (or BEDMAS or BODMAS or BIDMAS - all the same thing)
1. Parentheses
2. Exponents
3. Division OR Multiplication.  Multiply & divide in the order the operations occur, left to right.
4. Addition OR Subtraction.  Add & subtract in the order the operations occur, left to right.
    When working with multiplication and division, you do whichever comes first as you work from left to right.  If multiplication comes first, do it before dividing.  The same holds true for addition and subtraction.  When the subtraction comes first, subtract before you add.  Remember - you are working left to right and you will perform the operation that comes first.  Multiplication and Division are treated equally.  Addition and Subtraction are treated equally.  You are working left to right, which is your main priority.

    But then, to complicate matters, different calculators follow different orders of operations, yielding different results.  Simple calculators use the chain calculation mode, working left to right without any priority assigned to different operators, giving:

    1 + 2 × 3 = 9

while more sophisticated calculators use the standard priority, giving:

    1 + 2 × 3 = 7

    So good luck on EVER getting a consensus on a math equation.  Doesn't elicit much confidence when it comes to relying on math for things like, oh say, calculating jet fuel requirements, or construction materials for mega-story buildings.  And maybe that accounts for some of the really annoying software problems we all encounter, because some programming languages use precedence levels, while others use strictly left to right.

References:

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