The article argues that decision theory alone is not enough for making choices under risk, and suggests that virtue is needed to make better decisions. The researchers show that decision theory struggles to explain the St. Petersburg paradox, where a game with infinite expected value is valued less. They propose that having the virtue of risk assessment allows people to make better decisions by considering emotions and perceptions of value. In real life, situations like assessing risky technologies mirror the paradox, highlighting the importance of virtue in decision-making.