Harry, don't be obtuse. My comment was tongue in cheek. Boeing, having chosen 7n7 as their model numbers may have resisted a switch to 8n8 as a marketing ploy. They would not be the first company to get hung up on numbers: SAAB with their 9n went to 900 and then 9000 before reusing 90 numbers. Peugeot had a thing with their numbers as did Volvo.