Right…. Ok.
I have a very important question:
Since we have 400ppm of Co2 in atmosphere now, and in past we have estimated at least 2000ppm, what is the “correct” amount of co2 in the air?
Did you ask the plants?
https://www.theguardian.com/science/2022/dec/07/dna-from-2m-years-ago-reveals-lost-arctic-world 
