Is There a Final Ultimate Approach?

The book is just full-to-thought experiments, which he tries to solve using all the grand moral theories. And so it might be that you can have this pluralist approach that ultimately converges into one kind of final ultimate approach. So why should we assume that there is certainly one way in which these discussions should be rationalized? Perhaps that is not. But they put on thinking that we keep discussing the input and think of this philosophy that is not appreciated enough anymore.