We discuss the most important math equation for creating great relationships, something all relationship-minded single people MUST seriously consider (and if they don't, they forfeit their right to complain ;-D ). But before then, we get an update on trends in arranged marriages, Paul reveals the "best" Supreme Court Justice, and Ben Franklin speaks from the grave about the downside of relational choice. We consider the male thrill of the hunt as apex predators, and whether there is a female analogue (apex nurturers?). We also discuss Carol Dweck's growth mindset concept in the context of single people.