Dr Inferno of Denial Depot has commented there on the proper mix of experts
Perhaps the interlocutors will take heed.
I notice all the proclaimed experts in the discussion unquestionably accept the existence of so-called "carbon" gases in our atmosphere. Surely for a legitimate dialogue you need experts who are willing to question the very foundations of PCAGW.
How for example does carbon dioxide manage to float within the air itself being that it is heavier than air? Anyone who has held a diamond or a piece of graphite can attest that carbon is a solid, not a gas. As a gas it would simply fall to the ground as and so become solid. We see on Mars that the polar caps are made of carbon dioxide in it's true solid state.