It is not essential that the whole circular network to be incorporated in a life-like system. A part of the network is accelerate by a newly evolved ribozyme is important. I tried to describe this, but it seems not sufficient. So I added carefully descriptions at lines 455 – 457, 466 – 471, 483 – 48
Fig 7 - Viewing a metabolism as a cycle seems to be only half the story. Nutrients go in and waste comes out. This is a throughput, not a cycle. Also the diagram does not indicate whether the ribozymes are made by the cycle. I think there is some room for improvement in this diagram.