Does rational decision making necessarily entail selfishness?

Rational decision-making does not inherently entail selfishness, as it can involve considering the welfare of others and the broader consequences of one's actions. While individuals might make choices that prioritize their own interests, rationality can also encompass ethical considerations and the potential benefits to the community or group. Ultimately, the nature of rationality depends on the values and objectives guiding the decision-maker. Thus, rational choices can be both self-interested and altruistic.