>
>Sorry this has very little to do with the topic of the thread.
>
>-- Lawrence Lile

Not at all, it's an important distinction.
What you create is a mesh of impedances. More of the current will follow the lowest impedance path.

If you do your layout sloppily, then you end up with a pretty much random distribution, which results in symptoms like "when I plug in the sheilded cable, the noise gets WORSE!". Very frustrating and confusing until you see what's happening, then it's a screaming clue to the problem.

Layout done right is like a proper sewer system, nearly all the S*** goes where you want it to, almost all the time.  (Feel free to quote this.. :)

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