The word "creepiness" is nowhere on that wiki page and I don't believe that creepiness is strongly associated with that formula attributed to Maurice Chevalier.

The word "creepiness" is nowhere on that wiki page and I don't believe that creepiness is strongly associated with that formula attributed to Maurice Chevalier. To clarify what I mean by "associated", I'm talking about typical people holding both that formula and the "creepiness rule" as interchangeable labels for the same concept. There is certainly some overlap between the two concepts but a 43-year old woman would understandably find a 73-year old chasing her a little "creepy" even though the she's within acceptable range of that math formula. Therefore, the "creepiness rule" is something else outside of that formula. Another difference is the age/2+7 formula is a guideline for how society (the non-participants in the relationship) perceive the age disparity. The "creepiness rule" is more descriptive of how the participants perceive potential partners.