Well the good news is that we're planning this lovely big experiment to work out the parameters. The bad news ...

Given, for instance, how bad the wildfire & drought problems have become in recent years and given the powerful positive feedback loops seemingly in operation it would seem that the appropriate thing for climate scientists to agree is that the only sane approach is an all out mitigation of all the known factors in the hope that the end result will be a planet that is salvageable. And they need to state that we don't know how bad things will get or how quickly.

"It is not necessary to have hope in order to persevere."