Explaining the Origin of Life is not Enough for a Definition of Life

@article{JagersopAkkerhuis2011ExplainingTO,
  title={Explaining the Origin of Life is not Enough for a Definition of Life},
  author={Gerard Jagers op Akkerhuis},
  journal={Foundations of Science},
  year={2011},
  volume={16},
  pages={327-329}
}
The comments focus on a presumed circular reasoning in the operator hierarchy and the necessity of understanding life’s origin for defining life. Below it is shown that its layered structure prevents the operator hierarchy from circular definitions. It is argued that the origin of life is an insufficient basis for a definition of life that includes multicellular and neural network organisms. 
1 Citations

The Issue of “Closure” in Jagers op Akkerhuis’s Operator Theory

The challenge is to understand how the transition from non-life to life can take place, that is, the how the closure in Jagers op Akkerhuis’s hierarchical classification of operators comes about.