 Having reviewed the evidence from research designed to test the empathy-altruism hypothesis against the six egoistic alternatives …, it is time to come to a conclusion—albeit tentative—about the status of this hypothesis. The idea that empathy produces altruistic motivation may seem improbable given the dominance of Western thought by the doctrine of universal egoism. Yet, in the words of Sherlock Holmes, “When you have eliminated the impossible, whatever remains, however improbable, must be the truth”. It seems impossible for any known egoistic explanation of the empathy-helping relationship—or any combination of them—to account for the research evidence we have reviewed. So what remains? The empathy-altruism hypothesis. Pending new evidence or a plausible new egoistic explanation of the existing evidence, we seem forced to accept this improbable hypothesis as true. (Batson 2011:  160)[21] 