Feel free to comment if you spot some inaccuracies or have some remarks.This post was entirely written using the IPython notebook. You can see a static view or download this notebook with the help of nbviewer at 20150131_XKCDDating Pools.ipynb.Although this is a fun rule of thumb, what does research say about age preferences for potential mates?
He has published on the topics of breakup, geographic separation, infidelity, social networks, cognition, and need fulfillment and emotions in relationships.
This is old science from when women relied on men financially.
A common rule of thumb, at least on the internet, is that it’s okay to be interested in someone “half your age plus seven” years.
According to this rule, it would not be creepy for a 30 year old to date a 22 year-old, but an 18 year-old would be off-limits.
Now that we don't need to do that we're going for younger men.
Literally, we are choosing physical attraction over security because we now have options that never existed for us before.
Women are delaying having children, so biologically we need younger partners. The stats you show do not account for these rapid changes that only began in the 1990's.
If you look at studies now you'll see that women have an average 9 year age range either side of their own with a preference for a small 4 years either side of their own age.
We proceed in two parts: As explained in the comic, the "standard creepiness rule" implies that you can't date people below a certain age that depends on your own age.
Assuming this applies to everyone in the population or society you live in, this means that there also is an upper age bound over which people can't date you because you're too young for them.
However, it doesn’t represent women’s preferences at all.