The question you pose is really asking whether or not the origin of life occurred as an explosion of life forms or whether it followed a natural progression of material/chemical change.
No one can argue what really happened as we do not currently know for fact what really happened. The only thing we can draw on are our observations of how things work within the cosmos... from my understanding, the scientific community's "thinking" about this is that "life" came into existence through a localized cascade of events. Where the sanitized chemical interaction turned into the diverse "living" character of matter is of deeper question, but this particular step, where-ever it was or how ever many places it occurred, is that "first step" towards biological constructs. The amount of time it would require for this initial biology to change into the variation of life within your premise is likely the very component which defeats such proposal.
The origin of a bridge: it starts as the recognition for the need to build the bridge. Then the engineers design it, the laborers move the materials, and then they begin building it a piece at a time. Over time and by process, the bridge is built. The bridge doesn't just appear, nor do multiple bridges just appear.
Edited by AshsZ, : No reason given.
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