こっちが大分詳しい
Math professor bares 'formula for love'
http://www.abs-cbnnews.com/lifestyle/02/11/10/math-professor-bares-formula-love
そしてその論文らしきモノ
http://www.maths.unsw.edu.au/news/2010/marriageproblem.pdf
The formula
According to a handout by the UNSW School of Mathematics and Statistics, the process for determining whether to ask someone to marry you goes as follows:
1. First of all, set out the last possible age by which you want to get married, for example, 39. Call this number n.
2. Then, decide the earliest age at which you.ll start to consider women as potential wife material, for example, from when you turn 20 onwards. This age becomes p.
3. Subtract p from n (i.e 39- 20), then multiply the result by 0.368. This gives you 6.992, which then needs to be added back to your minimum age (20), which more or less equals 27.
4. This result is your optimal proposal age. Ideally you should not propose to anyone before you hit this age, but afterwards you should prepare to pop the question to the very next girl you date – as long as she.s the best of the bunch so far.
{(絶対結婚しておきたい年齢) ー (結婚を考え始めた年齢)} * 0.368 + (結婚を考え始めた年齢) ＝ プロポーズするべき年齢
だそうな。
