ABSTRACT
I am interpreting the proposition b in such a way that it is true only if the proposition 2 cannot be proved to be false by holding up one of my hands and saying ‘I know that this hand is a material thing; therefore at least one person knows that there is at least one material thing.’ One might wish to interpret the proposition b so that it is also true if, although the proposition 2 can be proved in the above manner, the proof is not related to the proposition 2 in the same fashion as Moore’s proof is to the proposition 1. If such an interpretation were adopted, what was said above would already be sufficient to establish the truth of the proposition b. I do not, however, believe that this is the correct interpretation.
