Person's Location Capacity = 25

https://www.economist.com/science-and-technology/2018/06/28/at-any-given-time-in-their-lives-people-have-two-dozen-regular-haunts

The 8 Best Predictors of the Long-Term Market

https://www.wsj.com/articles/the-8-best-predictors-of-the-long-term-market-1533521521

How to Have Sex in a Canoe

https://www.nytimes.com/2018/07/26/magazine/how-to-have-sex-in-a-canoe.html

Gravity Model of Trade

https://en.wikipedia.org/wiki/Gravity_model_of_trade

Hedonic Editing

https://link.springer.com/article/10.1007/s10902-012-9379-6

The Pursuit of Healthier Offices

https://www.nytimes.com/2018/07/31/business/healthy-office-real-estate.html