Oh! I used a similar mathematical model while finding a spouse. I figured, that for me, 37% (1/e) worked out to 13 people. This (finding people) is a space I'

Oh! I used a similar mathematical model while finding a spouse. I figured, that for me, 37% (1/e) worked out to 13 people. This (finding people) is a space I've spent a lot of time doing, planning, understanding, and thinking about :) Also, there are a lot of scientific papers on how to model these in scholar.google.com (sorry that I don't have links that I can give right now)