You write in pretzels, not clear English.

At the scales you are positing, there are very few things that humans could do that would affect global static potential. If the concept of a marble containing a large amount of iron and maintaining a significant magnetic field, traveling in a moderately hard (but by no means perfect) vacuum around a much larger magnetic field that is continuously spewing massive quantities of various particles, some charged, some not, some fast, some slow, some massive (in the realm of particles) and some not lets you see a way that rubber on concrete, even large amounts of it relative to human size and weight, will materially affect ground-voltage other than _very_ locally - I would like *that* explained.

No matter how arrogant Mankind might be, we are still barely the equivalent of light mold on an orange. And as far as the earth is concerned, various sorts of mold have come and gone with no material effect on the planet itself - not on any sort of galactic scale. We may render the planet inimical our particular type of mold, but as it happens, the earth just does not care as in the fullness of time, some other sort will come along.

Peter Wieck
Melrose Park, pA