Thank you for all your replies. Not having a great mathematical background, seeing all this makes you guys look like whizzes.
I think the link that JadziaDax gave me helped a little but its going to take some practice before I totally get it. It is as if 0 is the 'landmark' of the number line and that everything is relative to it . . . except that the closer you get to it, the more undefinable it gets.
Anyway, its cool to see that you guys were willing to help.
Thanks again.
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