I think there's probably a few key conceptual ingredients at most, but it might be that the implementation is complicated. As an analogy: we know that mitochon

I think there's probably a few key conceptual ingredients at most, but it might be that the implementation is complicated. As an analogy: we know that mitochondria provide power to cells by oxidizing sugar and converting the energy to ADP/ATP, but how all of that actually gets carried out is very complex.