My answer is that we are already influencing climate and will continue to do so; therefore we must learn to manage climate. I believe the answer to the question is yes.
This blog is dedicated to continuing a discussion which began on RealClimate in the thread The debate is just beginning — on the Cretaceous! where I started a discussion based on a comment by Steve Reynolds, who asked why China and India would allow their economic growth to be slowed in order to produce less greenhouse emissions.
My opinion is that they will not. My opinion is that "emissions reduction" has little or no chance to avert catastrophic warming. I believe we must engineer our way forward.
I would like to continue that discussion.