I got the shot because my personal variables, evaluated by my personal judgement, led to a rational decision to get vaccinated.
Other people have different variables, and they will evaluate those variables differently, so they will come to different decisions.
If you don't see individuals, but you only see groups such as political opponents and political allies, then the math is indeed very simple for you. Vaccination Decision = (What will help my political party) x (What will gain me points on the Open)
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