This part continues the discussion regarding the importance of the moon in Earth's history. We have pretty well settled the artificial nature of the whole remarkable regime itself. This identifies some of the more obvious accelerants along the way.
This is a good point to discuss time scales. I suspect that the decision to terraform Earth took perhaps as recently as two hundred thousand years ago. Actual preparation was likely quite fast and entailed producing a massive gravity device for the job. This was meant to stay in place. It may even have been managed from a space habitat in Phobos and uses material from the crust of Mars where the evidence conforms to all this.
This engine was then deployed back in time via a wormhole to set up the Earth Moon system. It is also reasonable that successive interventions also took place through Earth's history of a far less dramatic scale. We already understand the Pleistocene nonconformity as one such. As well the ending of the dinosaur age likely was timed to allow templates for humanity to be ready 200,000 years ago.
This also means that another option hold true. The Moon retains its own gravity engine and can maintain it position by minor adjustment throughout the last four billion years. It likely ripped half the crust off the earth by descending to the surface and applying gravitational changes to the earth's crust or alternatively the crust of the earth .had its gravity neutralized while the nearby moon provided attraction. The crust then flowed up to the moon to provide cladding. At that point the moon then moved to its present location by the tidal process described or by its own choice.
I suspect that this also happened to Mars as well to provide building material.
That raises the possibility it was reintroduced by cross-breeding with earlier species.’22