I have read though the past threads, and everything I can find on the net, but I still do not see how we can bring a dead planet to life.
The main problem, as far as I can see is one of a critical mass. The earth has a mass that allows for a solid core with a liquid outer core. This is due primarily to the resulting pressure gradients dividing layers into distinct divisions that move as independent units.
The earth is not just a rock with things growing on it, it is alive in a real sense, from the core though several layers outward, one layer dependent on the next. These complex dynamic interactions are fundamental for life, it seems only natural to deduce that these environment conditions reflects the life it produces, and sustains, and vice versa.
These dynamics allows for the formation of a mobile core, that envelops the planet in a protective electromagnetic shield, and not to mention the mobility of plate tectonics. Intuitively It strikes me that without these underling dynamics the planet could not sustain the dynamics of a life support system.



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The taijitu represents an ancient Chinese understanding of how things work. The outer circle represents the entirety of perceivable phenomena, while the black and white shapes within the circle represent the interaction of two principles or aspects, called "yin" (black) and "yang" (white), which cause the phenomena to appear in their peculiar way. Each of them contains an element or seed of the other, and they cannot exist without each other.
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