 When we deliberate about a possible action, we ask ourselves what will happen if we do this or that. If we give a definite answer of the form ‘If I do \(p\), \(q\) will result’, this can be properly regarded as a material implication or disjunction ‘Either not \(p\), or \(q\)’. But it differs, of course from any ordinary disjunction in that one of its members is not something of which we are trying to discover the truth, but something within our power to make true or false. …