ABSTRACT

The essence of what is commonly called a disjunctive proposition is that it asserts that one or other of certain alternatives holds good. To understand clearly the meaning and implication of the alternative type of proposition, it is necessary to realize how it comes to be used. Sometimes it arises out of the classification of things and qualities into classes and sub-classes. The term disjunctive, which is commonly applied to alternative propositions, rather implies, or, at least, suggests strongly, that the alternatives are always mutually exclusive. In a great many cases the alternatives are as a matter of fact mutually exclusive. With a little care it is even possible so to express alternative propositions as to make the alternatives always mutually exclusive. Alternative propositions are essentially affirmative. Whatever the alternatives may be, the proposition always asserts, in effect, that one of the alternatives is true.