I’m following just fine. I saw your question and I find it doesn’t matter and I’ll say why it doesn’t matter. Logic: Let’s say 10% is caused by man, 90% by anything but what we do. So, fuck it all, why bother, just pour the coal in the furnaces right? 90% us, 10% not us, wow, hey we can make a real difference. Either way, we can make a difference. Quibbling over models solely serves the purpose as an excuse to do nothing or worse, escalate it.
If humans had ZERO impact on the environment and there was a valid model showing that, well THAT would be worth looking at because if that’s the case, we can do what we do with abandon. In any other circumstance, we can do something to improve things.
If you believe your question is valid, please justify it. As it stands, I see no logical justification for it.