I have no problem with the suggestion, but it's only a theory, and does nothing to explain the origin of RNA or any ability to reproduce in isolation.
It also doesn't explain the origin of the proteins that are the actual work horses of life, which can only be conceived to naturally experiment with each other once they exist. — Gary Enfield
I only raise souls or ghosts because they often come up, and these ideas can stand in as place holders for pretty much any claim of access to a different realm outside naturalism. — Tom Storm
If an evolutionary account of life's origins is valid, this is what it has to account for and what chemistry experiments have to generate in some form:
Rudiments of life began as some form of reaction cycle, refined billions of years ago in conjunction with growingly complex membranes and carbon-based molecules until evolutionary independence from fully inorganic features of the environment arose. Though all the molecular parts of recycling biochemical loops were interdependent, these first membrane-parsed solutions, even when their protocells were clumped together, must have been more like an ecosystem than a mechanized factory, with chemical bonds breaking, forming and adaptively transforming as energized quanta of matter flowed at the nanoscale.
This streamlining of dynamic equilibrium was punctuated at times by key evolutionary events, simple subunits of molecular ecosystems coalescing into more complex macromolecules, segments of reaction pathways refined by natural selection for greater efficiency until stabilized as persisting, relatively large three dimensional structures. Evolving macromolecules would have become loci of intramembrane ecosystems, primary drivers of pathways in energized mass that brought overall chemistry into their orbit.
Apex molecules must have reached a stage where structural integrity was no longer especially vulnerable to decomposition via any surrounding chemical reactions, but instead mostly recycled from smaller building blocks of matter or sustained by repetitiously drawing energy out of atoms and radiation in the environment, graduating from basic chemistry to what we might call functional mechanisms. This would have been the beginning of metabolism, primordial macromolecules utilizing quantized matter for replenishment, as nutrient sources.
At some stage, molecules in these metabolic systems gained the capacity to not just generally exploit environments for energy, but also precisely replicate external subunits, which was a huge evolutionary advance, surpassing mere utilization of various smaller molecules to the point of finely controlling their concentrations, regulating nutrient supplies as the first primitive enzymes, a sort of inanimate farming based around feedback mechanisms. Paralleling this outcome, some molecules became capable of introducing to the environment stretches of their own structure, built out of surrounding molecules, the ancestors of RNA.
How these two threads of evolution - enzymatic and self-replicative activity - gelled into a stable genetic system is unclear, but judging from the nature of modern cells, it seems this process must have been complex, as molecules currently carrying out these activities span a rather broad spectrum. The following all exist in sizable amounts: self-replicators and the enzymes that catalyze their reproductive processes, partially self-replicating enzymes in likeness to the ribozyme, and the much greater quantity of enzymes not directly involved in self-replication, but which produce components of recyclitive biochemical pathways.
If we can regard this evolutionary process as having an overall direction rather than serendipitous cooccurrence, a claim about relative progress vs. relative chance which pends further research into modern cells and their processes of adaptation, it seems biochemical pathways generally settled into a division of labor, where some molecules are specialized for self-replication, some for metabolism, and relatively few a limited capacity for both. The most sophisticated forms of this cellular behavior, which are inextricably linked in modern cell types by biochemical pathways, seem to have first evolved in ways that were isolated from each other, in separate membranes, with the fate of macromolecules, already partially streamlined for function, conjoined in symbiotic relationships when cells engulfed each other without digestion as in the case of what became nuclei, mitochondria and chloroplasts.
At any rate, self-replicators advanced from modest regulation of intracellular environments to such precise control of biochemical ingredients and pathways that molecules of RNA and DNA can be analogized to hubs of information storage, the primary blueprints for cellular biochemistry, with DNA molecules duplicated almost exactly upon mitosis and templating most of the astounding variability in an organism’s physiology.
In my opinion, an alternative could not possibly exist, as the intermediate steps will have to be mechanisms of this type, unless we are going to assume some magical hocus pocus causality. Its a matter of refining theory so that our knowledge of causation is accurate, which may admittedly include an element of what is commonly regarded as the spiritual. Spiritual causes are not immaterial, they are natural and must participate in evolution defined broadly as organized, self-selective change in substance. If spirits drive change in substance, that will eventually show up as a facet of the theory of evolution.