This chapter is about game theory where models describe a situation of zero sum games. I don't want to get into a discussion on zero sum games because they are more useful in a situation where you trade in derivatives or currency. Someone's win has to come off from someone's losses. This is the kind of game that I really hate getting into.

Instead the addendum of the chapter talks about something more interesting which is the problem of identification.

What causes people to take up a particular investment approach like value investing or quantitative investing ?

The peer effect model reasons that people adopt an approach when influenced by their peers. If that were true, a person who joins Seedly would become more open minded to buy whole life insurance, where a network of FAs are brazenly picking fights against the BTIR crowd. If this person joins BIGScribe, I am guessing he