 The famous Agrippan trilemma identifies three possible ways this regress of justification might ultimately unfold. First, it could go on forever, with \(A\) justified by \(B\) justified by \(C\) justified by …, ad infinitum. Second, it it could cycle back on itself at some point, with \(A\) justified by \(B\) justified by \(C\) justified by…justified by \(B\), for example. Third and finally, the regress might stop at some point, with \(A\) justified by \(B\) justified by \(C\) justified by…justified by \(N\), which is not justified by any further belief.