Why does the sequence of colors matter when terminating cables?

Why is it that I must use:
Wh/Gr - Gr - Wh/Or - Bl - Wh/Bl - Or - Wh/Br - Br
or:
Wh/Or - Or - Wh/Gr - Bl - Wh/Bl - Gr - Wh/Br - Br
and not something simpler to remember like:
Wh/Gr - Gr - Wh/Or - Or - Wh/Bl - Bl - Wh/Br - Br
?
I make patch cables like that when needed and don't have any 'problems', yet I have to believe that the 568A and 568B specs use these specific sequences for a reason but as I have never been taught the principals of Ethernet cabling I don't know what they are.
Any pointers appreciated as I am supposed to be cabling an office suite in the next week or so.
Thanks,
Alex

1. RE: Why does the sequence of colors matter when terminating cables?
lbyard Oct-09-01 04:32 PM
In response to message 0

Alex, the answer is here: http://duxcw.com/faq/network/ends.htm. Larry