I had always thought that the A, B, C method of boarding meant that the A group would board first and go all the way to the back of the plane. B in the middle, and C in the front third. This would be the *most* efficient boarding of an aircraft so people don't have to climb over others to get farther back.
But alas, people have used it to pick their favorite seats, even if it means everyone else has to push past them to get to their seats. STil better than assigned seats though from a customer perspective.
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