  Probability is not discussed in the 1968 paper, but Adams’s logic is in the background as a guide: it turns out that Stalnaker’s logic coincides with Adams over their common domain (Adams puts aside sentences in which conditionals are embedded in other connectives). Thus, for example, Stalnaker also has the counterexamples to transitivity, contraposition and strengthening of the antecedent (1968, 48–9).