Reincarnation is a complicated topic because we most often have great difficulty expressing just what we mean by the term. Because, if it is really “me” who is reborn in such a case, would this not mean that I would have to be able to recall my previous existence? On the other hand, however, we have no doubt that, in the case where we should develop grave senile dementia, it would still be “we ourselves” and no one else who would continue to exist, even though we would no longer be able to remember anything. If we were able here and now to take certain measures which would bring it about that in such a condition of senile dementia we would not have also to suffer certain further pains, we would, it must be supposed, indeed take such measures; we would not say: what happens to me some decades from now is a matter of indifference, if the “I” that exists then will have no memory and will, consequently, be a different person from me. This phenomenon of grave senile dementia is clear evidence that our continued existence is not necessarily linked to the ability to remember. With a little imagination, then, one can envisage how a “second existence” (after one or another form of reincarnation or rebirth) might likewise not necessarily have to involve any memory of the past. For this reason, it would seem not to be entirely unreasonable to try to develop a “reincarnation test” for the purpose of testing nativistic theses and beliefs.