> how is it that none of them have possessed a mutation which (...) endogenously produced the signalling molecules which Katcher is proposing as treatment? Bec

> how is it that none of them have possessed a mutation which (...) endogenously produced the signalling molecules which Katcher is proposing as treatment? Because evolution is a random-driven process. (in the same way that we carry a number of traits that made our survival harder)