And I think you hit the nail on the head with: «5)
Once we scientifically - oriented Skeptics accept the reality of the Atmospheric «greenhouse
effect» we are, IMHO, better positioned to question the much larger issues which are: a) HOW MUCH does CO2 contribute to that
effect, b) HOW MUCH does human burning of fossil fuels and land use changes that reduce
albedo affect warming, and, perhaps most important, c) Does the resultant enhanced CO2 level and higher mean temperature actually have a net benefit for humankind?»