Boarding Sequence

Date:         31 Mar 2000 22:25:20 
From:         emtgx@aol.com (General Tso)
Organization: AOL http://www.aol.com
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Is the boarding sequence with which we are accustomed devised to avoid
jamming the aisles with people and bags, or does it have something to do
with the center of gravity of the aircraft?

I have seen photos of planes tipped with their tails on the ground due
to improper loading. But they load passengers starting from the back,
right?