Welcome,
Platypus:
Platypus wrote:True self-interest has to take into account such game-theoretic and system-level considerations, but in general when you hear the phrase "greed is good" it's likely that they're being ignored. Greed is good only if combined with knowledge and patience.
An interesting notion, but one that is, in the end, largely unpersuasive. If it is in one's self-interest to take into account the interests of others, then that is simply a recalculation of self-interest, not a redefinition. If I am in a lifeboat in the middle of the ocean, I may want to encourage others to join me so that they can help row. If I am clinging to a single piece of wood, I would want to discourage anyone from grabbing hold of it lest we both drown. My self interest is served in either case; it is only the calculation of that interest that differs.
Those kinds of calculations take place all the time, whether or not people view them in game-theoretic terms or take into account system-level considerations. Indeed, as Adam Smith pointed out, capitalism functions quite well despite the fact that no one is working specifically in the interests of the capitalism. Granted, people can, and often do, make unwise decisions based solely on considerations of self interest. The
Prisoner's Dilemma, the Stag Hunt, the Game of Chicken -- game theory abounds with examples of self-interested decisionmaking leading to sub-optimal results. But to characterize sub-optimal actions as "bad" actions is a logical leap that needs to be explained, rather than just assumed.
In the initial quotation, greed is considered "good" because greed works on a systemic level. It's not just that being greedy is an optimal choice for the individual, but it's also an optimal choice for society in general. According to this view, greedy people make things, sell things, and increase wealth and welfare throughout society. Undoubtedly, among those greedy people will be people who, on occasion, are led to make bad decisions based upon their greediness, but, on the whole, it is better to let people be independent and greedy rather than outwardly controlled and unwillingly altruistic (as Rand might argue).