Posted By:
Max WederGah! How could I not read your entire post? Apologies.
The golden ratio, which of course when used on old cardboard produces the greatest aesthetic.
Max
(who spent an hour with my ten year niece, priming her to ask her math teacher what the square root of -9 was. I also explained fibonacci numbers to her, but didn't have the courage to tell her to read Da Vinci's code)