Why Do We Make Friends?

• https://shorebird.hatenablog.com/entry/2023/12/21/111254

• 45-Hour Theory

  • Leaving aside how reliable it is, it’s interesting as a model of the concept of “friends.”

• Books with a lot of information listings are not very interesting - Iyokan-san

• I had a model in my head like Building Human Relationships is Random, so Increase the Number of Attempts, but perhaps KPIs should focus on the duration rather than the number of attempts.