Alas, net zero carbon is not peak heat. It’s peak carbon dioxide. It’s peak rate of temperature change due to greenhouse gases. Global average temperatures will continue to rise past 2060 (or whenever we get net zero). I’m not sure what the models predict. Perhaps the total temperature rise could be 3.5 degrees by 2100.
Written or printed out at 3 digits per centimeter, 202 trillion digits would make a string about 670 million kilometers long -- or about the distance between Earth and Jupiter.
Solar-powered railgun accelerating rocks to lunar escape velocity in directions chosen to make the desired delta-v. Speed the moon up or slow it down or change whatever other orbital elements you please.
This would work better to change the orbit of a small asteroid. For the moon it would take (a lot) longer.
Both manufacturing corporations and mutual investment funds are ways to aggregate smaller amounts of capital into big enough sums that large factories or investments are possible. I don't think it's necessary to rely on multi-billionaires for investment in wild ideas.
Just before the section on Moore's Law, it says this about silicon purity:
> Electronic grade silicon (EG-Si): 99.9999999 pure ('nine nines pure') Thats one impurity atom in every 10.000.000 silicon atoms.
I believe that should be 1.000.000.000 (10^9 atoms) to correspond to nine nines pure. Just as one impurity atom in every 100 (10^2) atoms would be 99% (two nines) pure.