剧情简介：It seems reasonable to believe that there might have existed things other than those that in fact exist, or have existed. But how should we understand such claims? Standard semantic theories exploit the Leibnizian metaphor of a set of all possible worlds: a proposition might or must be true if it is true in some or all possible worlds. The actualist, who believes that nothing e...(展开全部)
作者：Robert Stalnaker
出版社：Princeton University Press
ISBN：9780691147123
