" To determine the range of what is considered socially acceptable, divide your own age in half and then add seven.
For example, a 30-year old can date anyone from 22 to 46, according to the formula.
Based upon this rule, the only time that a man can date a woman his own age is when he's 14 years old (because half of 14 is seven, and seven plus seven is 14).
Figuring out the high range of 46 requires knowing the math of a 46 year old.
Incidentally, if you're wondering how well is this rule adhered to in practice, the dating website has done an extensive analysis of age preferences amongst their members.
A really interesting analysis (and quite sophisticated - maybe done in R?
Some of us limit our potential partners to a very specific age range because that’s what we think we’ll be attracted to.
This kind of culling is even easier now that dating sites let us whittle our options down to the year.