Life start point

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A depiction of the "life start point", from the origin of life article, showing a hypothetical "point" in time, wherein "life" arise from "non-life".

In hmolscience, life start point (LH:3) refers to the hypothetical point in time, space, or spacetime when “life”, on earth, began, started, or came into existence.[1]


The following are related quotes:

“It could be that it is extremely difficult to start life. It might be that it is so difficult to start a life that it has happened only once among all the planets... Let us consider, just as a conjecture, that the chance of life starting when we have got suitable physical conditions is 10−100. I don't have any logical reason for proposing this figure, I just want you to consider it as a possibility. Under those conditions ... it is almost certain that life would not have started. And I feel that under those conditions it will be necessary to assume the existence of a god to start off life. I would like, therefore, to set up this connection between the existence of a god and the physical laws: if physical laws are such that to start off life involves an excessively small chance so that it will not be reasonable to suppose that life would have started just by blind chance, then there must be a god, and such a god would probably be showing his influence in the quantum jumps which are taking place later on. On the other hand, if life can start very easily and does not need any divine influence, then I will say that there is no god.”
Paul Dirac (1971), “Does God Exist?”, Landau Meeting Conference[2]
“Quick question: what day exactly did the first life in the universe begin?”
Libb Thims (2010), “Origin of Life” (reply to Georgi Gladyshev's post: "I have written (in Knol) two notes on the origin of life in Russian"), Threads (post #1); argument start point, between Gladyshev and Thims, in the prolonged defunct theory of life debate, which eventually broke up their five-year friendship, Dec 4
“Let us cut through all the talk and plainly state when life began. Drum roll, please. Life began when the first electron of either a hydrogen, an oxygen, or a nitrogen atom sought out to bond with a carbon atom. It was stimulated to do so, thus the first example of reacting to an external stimulus—the final requirement for life. In other words, consciousness (self-awareness), at its lowest common denominator, is seeking an electron bond with carbon. Once that first step was taken, the subsequent developments were a matter of complexity over time. The next step would be that molecules would avoid environments that threatened to destroy their electron bonds, such as the dehydrating effects of direct sunlight or too much hydration. A recent discovery in a crystal of zircon suggests that life was already fermenting organic byproducts as far back as 4.28 billion years ago.”
— Frank Dunn (2020), From Molecule to Modern Human (pg. #)[3]

End matter


  1. Note: the question, itself, is loaded, with the "presupposition", i.e. a thing tacitly assumed beforehand at the beginning of a line of argument or course of action, that "life" exists presently, which is a false assertion (see: abioism).
  2. Kragh, Helge. (1990). Dirac: a Scientific Biography (pgs. 256-57). Publisher.
  3. Dunne, Frank. (2021). From Molecule to Modern Human: the 4.4-Billion-Year Evolution of Homo sapiens (§1: Life is But and Electron Bond, pg. #) (Amz). Publisher.
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