Mathematician Johannes Kepler says that you should date 37% of your candidates, and then marry the next one. This relates to 1/e .

> when is the optimal time to marry someone, assuming you want to maximize the happiness in your life? The answer, perhaps surprisingly, is to follow what’s known as the 37% rule: reject the first 37% of all possible choices, and then pick the very next one to come along whose potential exceeds the best of the 37% who came before. Although some will wind up passing over their optimal choice and others will choose a partner before ever meeting their best possible match, the 37% rule is the mathematically superlative strategy. [....]

> assuming you choose the optimal strategy for attacking this problem — rejecting the first 1/e (or 36.788%) candidate options and then choosing the first option that exceeds the best option you saw over that initial time — what are the odds that you will actually wind up selecting the overall best possible option?

> The answer, believe it or not, is also 1/e, or 36.788%

"Astronomer Johannes Kepler solved life’s hardest problem: marriage" | Ethan Siegel | September 26, 2023 at https://bigthink.com/starts-with-a-bang/johannes-kepler-solved-marriage/