Gregory S. Kavka (1947-1994) on Conditional Arguments
Some may not be satisfied with these responses to the Marxist objection to Predominant Egoism. Others will regard degrees of altruism as purely environmentally determined, on different grounds than those offered by Marxists. Yet others will interpret the observational evidence about human motivation quite differently from the way we have and will on that basis reject Predominant Egoism. To those who for these or other reasons decline to accept Predominant Egoism, a final alternative may be offered: Treat the arguments and conclusions that follow as conditional or hypothetical. Regard them as having the form “If people were (or are) predominantly egoistic, then. . . .” This will allow you to follow the reasoning of, and discern the structure and content of, Hobbesian moral and political theory. The only difference will be in the lessons drawn. You will see, through your relatively rose-colored glasses, the implications of what you take to be an erroneous pessimism. Hobbesians, by contrast, will see a system of plausible moral and political hypotheses emerging from a realistic portrayal of human nature.
(Gregory S. Kavka, Hobbesian Moral and Political Theory [Princeton: Princeton University Press, 1986], 80)
Note from KBJ: I love this paragraph. Do you see what Kavka is saying? He’s making an argument, one premise of which is Predominant Egoism (the thesis, crudely stated, that human beings are by nature predominantly egoistic). He knows that not everyone accepts this premise and that those who don’t accept it (such as Marxists) will not be persuaded to accept the argument’s conclusion. “Keep reading anyway!” Kavka says. “You might learn something about Hobbesian moral and political theory.” This is exactly right. To persuade rationally, one must use only premises that one’s interlocutor accepts. If your major premise is utilitarianism, for example, you have no chance of persuading me to accept your conclusion, since I’m not a utilitarian. But that doesn’t mean I’m not interested in your argument, because I’m very much interested in what utilitarianism implies. If I understand utilitarianism well, I may even find fault with your argument! As a philosopher, my goal is to understand every normative ethical theory, every normative political theory, every religion, and every philosophical doctrine. Actually, there’s nothing distinctively philosophical about this. Everyone should strive to understand every important theory, religion, and doctrine. If you’re not at least striving to do this, then you’re wasting what sets you apart from other animals.