Re:Mimicking an impact on Earth’s early atmosphere yields al...
by mtdewcmu on Thursday April 13, 2017 @04:54PM
(#14110838)
I don't see self-replication as being the hard part. Once you have enough complex chemistry going on, self-replicating processes will appear spontaneously like contagious diseases. I'm thinking of, e.g., prions, which self-replicate, but they are not life -- they're just screwed-up proteins that happen to screw up other proteins in exactly the same way they themselves are screwed up, thus making more of themselves. There are also plasmids, which don't really resemble anything like life, yet they self-replicate. Self-replicating things pop up randomly in strange places and they are amplified through positive feedback.
The hard part seems to be getting to the point where the chemistry is so complex that self-replicating things are even possible.
I enjoy works which look for scenarios where both could have emerged simultaneously. Reading the introduction of this paper/article provides an accessible exposition to the topic: http://www.mdpi.com/1422-0067/10/4/1838/htm
If you are curious about under what conditions self-organization might more effectively dissipate entropy I suggest reading anything by Ilya Prigorine. But this short minute physics video narrated by Sean Carroll is good for a start: https://youtu.be/HxTnqKuNygE?t=2m07s