 It should be noted that while this explanation of the circumstances in which a conditional is asserted seems very plausible, the account does not readily extend to apparent discrepancies between ordinary language conditionals and the material conditional when the conditional is embedded in a larger context, e.g., “Mary believes that if George is driving, he will be late”. Mary’s believing that George will be late allows Mary to immediately form the material conditional belief George is driving \(\rightarrow\) George will be late. But this is clearly not enough for a speaker reporting on Mary’s beliefs to assert that Mary therefore believes that if George is driving then George will be late. Grice’s explanation cannot say why.