Is this just the geometric series? 1, 9, 9×9 = 81 The other ratios in the article are similar: 85:14:1 or 91:8:1 This is just basic Social Network Analysis (h

Is this just the geometric series? 1, 9, 9×9 = 81 The other ratios in the article are similar: 85:14:1 or 91:8:1 This is just basic Social Network Analysis (https://www.coursera.org/course/sna https://www.coursera.org/course/sna) This rule has two parts, given a choice of selections A: there are only a few "key players" even if the original selection was very large B: the ratio of #1 to #2 is about the same as for #2 to #3 This is why multiple choice always have 3 choices typically - we do not even notice #4... - - - - - - - - - - - - - - - loosely related: Viggo Brun wrote about algorithms to find to simple ratios... he was trying to tune a piano! He calculated the ideal tuning ratios are close to some simple fractions log(2/1):log(3/2):log(4/3) ≈ 12:7:5 ≈ 53:31:22 http://retro.seals.ch/digbib/view2?pid=ens-001:1964:10::21 http://retro.seals.ch/digbib/view2?pid=ens-001:1964:10::21