The low entropy v. life correlation has been rattling around in my mind for a long while now, and happy to find I'm not the only one (https://en.m.wikipedia.org/wiki/Entropy_and_life). A paper I stumbled upon also derives a possible methodology applying this idea to assess the probability of extraterrestrial life forms, or indications of their past existence (https://www.researchgate.net/publication/259436547_The_potential_for_detecting_%27life_as_we_don%27t_know_it%27_by_fractal_complexity_analysis) [note mention of the Mars orbital camera too]. The techniques describe spatial analyses, so got me wondering if this technique could also be applied to temporal observations on exoplanets -- perhaps needing various time series spanning multiple earth years, but still feasible. For example, if a far off observer of Earth could detect changes in carbon dioxide in our atmosphere following curves of fractal dimension greater than a "natural" process background, it could indicate the existence of an ordering process, something living, namely the collective effects of our civilization. More advanced civilizations might also have more pronounced fractal signatures, easier to detect. Thoughts?
-Greg
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