For exploding warmunist heads, just lay out the following for them to address:
1. Define the correct temperature range for the planet.
2. Define the correct humidity range for the planet.
3. Define the correct mean sea level for the planet
4. Define the correct amount of precipitation for the planet.
5. Define the correct makeup of the atmosphere.
6. Define the correct amount of sea ice at the N/S poles.
7. Define/explain past glaciation and subsequent warming without any input from humans.
For “correct” substitute “optimal”.
Then the follow on question is “optimal for whom”?
And rather than “Define”, “Identify”.
I only use #1. Conversation usually ends right there.