He approached the line with two other partners, but is well within the threshold in his marriage with Amal Alamuddin. The minimum rule (half-your-age-plus-seven) seems to work for men, although the maximum rule falls short, failing to reflect empirical age-related preferences.
How well does the rule capture women’s preferences?
This rules states that by dividing your own age by two and then adding seven you can find the age boundary: Take your age, subtract 7, and double it.
So for a 24-year old, the upper age limit would be 34 (i.e., 17 * 2).
For example, this sample of 60-year-old men report that it is acceptable to fantasize about women in their 20s, which the rule would say is unacceptable.
But fantasies, of course, are not generally subject to public scrutiny and the rule is only designed to calculate what is socially acceptable —so this discrepancy is not necessarily a failure of the rule.
Now we can see how well the rule corresponds with people’s reported acceptable ages.