It comes with experience, Bill..obviously you've been around them a long time, but with me, I remember they used to intimidate me when I didn't understand the concept all that well. You're afraid to **** it up so you stick to what you know. It's not until your comfort level increases with them that you start to really pick up confidence and can learn more and more. I can be sympathetic to those who aren't confident with them yet.

Freddie

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All I know is I know nothing - Socrates