Originally Posted by
f4rrest
0.883 is hilariously precise, considering the amount of inherent measurement error in measuring the inseam as well as measuring from the "center" of the crank to the "top" of the saddle, neither of which have true registration surfaces.
This automatically discredits the rule.
Sure, just round it up to .885 and you should be good.
I think that the rule's precision had been meant as a joke from the beginning, and that got lost somewhere along the way. But in the end you wind up with a number, and the number is OK, nothing to get hung up about.