A and ~A are not each evidence for B, if B is “there is a fifth column active”. In some ways, as I said, they already knew B—it was true. There were questions of degree—how organized? how ready? how many? - for which A and ~A each provide some hints at.
A and ~A are not each evidence for B, if B is “there is a fifth column active”. In some ways, as I said, they already knew B—it was true. There were questions of degree—how organized? how ready? how many? - for which A and ~A each provide some hints at.