Once more attention is called to the fact that these discrepancies negative completely the idea that the Gospel writers were conspirators, bent upon the common purpose of deceiving mankind by publishing a false history to the world. Nothing could be more absurd than to suppose that men conspiring to perpetrate a fraud, would neglect a fundamental principle underlying all successful conspiracy; that is, the creation and maintenance of a due and reasonable consistency between the words and deeds of the conspirators in formulating plans for carrying out the common purpose. Then, if there was no previous concert, the fact that four men, writing at different times and places, concurred in framing substantially the same history, is one of the strongest proofs of the credibility of the writers and the truthfulness of their narratives. And on this point the testimony of a very great writer may be quoted: that "in a number of concurrent testimonies, where there has been no previous concert, there is a probability distinct from that which may be termed the sum of the probabilities resulting from the testimonies of the witnesses; a probability which would remain, even though the witnesses were of such a character as to merit no faith at all. This probability arises from the concurrence itself. That such a concurrence should spring from chance is as one to infinite; that is, in other words, morally impossible. If, therefore, concert be excluded, there remains no cause but the reality of the fact."[25] Apply the theory of probability, arising from concurrent testimonies, where there has been no previous concert, to the case of the Evangelists, and we are at once convinced that they were truthful and that their histories are true. (4) Let us now consider the _conformity of the testimony of the Evangelists with human experience_. This is the fourth legal test of the credibility of witnesses prescribed by Starkie.