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If a careful scientific analysis leads us to conclude that the proposed mechanisms of spontaneous origin could not have produced a living cell, and in fact that no conceivable natural process could have resulted in the spontaneous origin of life, the alternative hypothesis of Creation becomes the more attractive.
Evidence for a Reducing Atmosphere: largely because he, being a chemist, recognized that such a "reducing" atmosphere would be required chemically to produce the "hot dilute soup" from which he believed life originated.
Being a chemist, he also recognized the necessity to exclude oxygen or oxidizing compounds from the mixture.
How Four components are essential to the story of the origin of life put forward by proponents of naturalism. An atmosphere full of reduced gas molecules and an energy source to convert these molecules into the biological precursors required for life. An ocean full of the small biological molecules that result. A mechanism to generate from this ocean of molecules the kinds of information-rich polymers necessary for a living cell. A belief that if step 3 can be implemented, it will result almost inevitably in the formation of a living cell. Chemical Evolution: independently suggested that life had originated spontaneously from non-living matter on the earths surface at some time in the distant past, and provided a scenario for its occurrence.
Since, at that time, the view prevailed that life was nothing more than complicated their ideas became widely accepted among those seeking to establish a naturalistic origin for life on the earth.
While little is known with certainty about the conditions required for the development of banded iron formations, rocks containing significant amounts of iron oxides, it is certain that some free oxygen was present. Thus again, we must conclude that we have no evidence that the "dilute chicken soup" ocean ever existed. As one proponent testifies, "the record of biological evolution manifest in the chemistry of living organisms....probably provides the most compelling evidence for a period of chemical evolution early in Earth history." This clearly is a tautology.
These formations were considered for years to be phenomena of the Proterozoic, and their appearance synchronous with the appearance of an oxidizing atmosphere about 2.0 billion years ago. Shapiro (1986) have all concluded that the term "dilute" is a gross exaggeration and that the presence of even the most abundant amino acids would not have exceeded .0001 gram per liter, much too dilute to be involved in polymeric reactions required to make proteins. origin of life, all conclude there is no evidence of the process having occurred. Newman have even gone so far as to declare, "The absence of evidence is not evidence of absence." For those of us who believe that life could not have originated from a non-existent "hot dilute chicken soup," such religious statements of irrationality by the likes of Sagan added strength to our conviction that he is just wrong!
Then we will go on to consider whether we could produce the kinds of biologically important polymers needed for life, given an ocean full of small molecules.
We will then ask whether it is even possible to make a living cell and investigate some significant areas of molecular biology to identify the complexity a living system entails.
Miller and Urey went on to propose that ultraviolet (UV) light, corona discharge and lightning produced small biological precursor molecules on the "primitive earth," which subsequently were deposited in the oceans by the hydrologic cycle.
Carl Sagan proposed the "primitive earth" was subjected to UV flux 100 times the present level, and that HS from volcanism was the agent catalyzing the transfer of energy from the UV light to the UV transparent elements in the atmosphere.