Use of definitions in attempts to explain any aspect of species-specific biophysically constrained cell type differentiation and aging has been replaced by the use of model systems of biological processes.  Biological processes can be compared to so-called “evolutionary processes” to show that only biological processes need to be considered in the context of Darwin’s “conditions of life” or answers to the the question  What is Life? Schrödinger (1944). K. L. Mettinger et al. (eds.), Exosomes, Stem Cells and MicroRNA, Advances…