Maybe you meant there is no deductive proof but the association of combustion--->CO2----> warming is solid
Of course but TECSHARE is simply denying that.
There are proof for temperature rise, CO2 levels and human activity producing CO2. There aren't any data for the link between the two simply because such data can't possibly exist. And all his argumentation is to say that the linked aren't proven because there is no data which is a complete logical fallacy of course.
But I already tried this way so I'm trying another right now. I have few hopes but well...