[Computer-oracle-brain]

The main question of this essay is this: What can the hypotheses of Artificial Intelligence (AI) that brains work like computers contribute to the question whether neurotransplantations are permissible or not. My attitude is primarily critical. I point out that the believe that we could exchange parts of the brain like parts of a computer is erroneous. Many mathematical functions are not absolute but only relative computable. The computation of the latter is only possible by using an oracle (a stock of knowledge), which has to be implemented in the computer respectively in the brain. Hence, one should know in advance, before a transplantation is performed, in which part of the brain the oracle is located. Otherwise we would not know whether the oracle will be damaged by a neurotransplantation, and, hence, whether the persons ability to think will be changed. Of course, this is only a presupposition, not the solution of the ethical question of the legitimacy of neurotransplantations.