So if you want to increase the number of people who have a certain affiliation, aiming your persuasion at people near 0 is the best way to do that.
The problem is that the people near 0 won’t read your book. The gravitational model suggests that you can write a book on a topic targeted at people near k>0, and affect more people near 0 than by targeting them directly.
The problem is that the people near 0 won’t read your book. The gravitational model suggests that you can write a book on a topic targeted at people near k>0, and affect more people near 0 than by targeting them directly.