The only way I see us overshooting is if CO2 suddenly becomes a valuable resource. The atmospheric CO2 concentration changes really slowly, at the rate of sever

The only way I see us overshooting is if CO2 suddenly becomes a valuable resource. The atmospheric CO2 concentration changes really slowly, at the rate of several ppm per year right now, just because there is so much of it. If/when we start bringing it down we will have plenty of time to stop. There is of course such a thing as too little, plants need some to survive. Something on the order of 150 to 300 ppm is the range it existed in for the last 800,000 years and probably a reasonable target. https://upload.wikimedia.org/wikipedia/commons/1/11/Carbon_Dioxide_800kyr.svg https://upload.wikimedia.org/wikipedia/commons/1/11/Carbon_D...