This sounds like another joke in the making:
Which would YOU rather have jump starting your car, a lawyer, an
accountant, or an engineer? ;=)
The accountant says red is negative (a financial loss), black is
positive (a gain).
The lawyer says red (blood) is positive (for him), black is negative.
The enginer says it doesn't matter, as long as you are consistent at
both ends, because the wires don't really care.
Clearly, the worst case would be an accountant at one end of the cables,
and a lawyer at the other end of the cables!
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