We have the knowledge and the technology to fix this in a decade. What we lack is the political will.
Green BAU will not save us and I am certain it will kill us.
It's all a question of what part of the sad unsolvable problem you are focusing on. What partial derivative of the damned equation you are calculating.
I mostly agree with the above quote, but (and yes I am a doomer, but not because I want to be) -
We do lack the political will. So some accept that as a fact and are seeking a technological/economic solution within the present framework that does not entail strong political will, under the assumption that waiting for the political will is what will kill us. Even if that solution is partial and too slow, it's the only solution that will ever get implemented.
Others accept that technology and economics by itself ("Green BAU") won't save us and surmise that the problem is lack of political will, and that this must be addressed. They are correct too. But it won't be addressed, as there is not enough political will.
Some feel there is no political will
because of those focusing on tech/economical fixes and lulling us. Not true at all. Their voice is not heard widely enough. They used the same voice for decades to try and create political will, and failed.
Green BAU will not "save us" mainly
because it is too slow. But neither will other more radical solutions
because they won't get implemented. Because most people can't afford to deal with it/don't care enough/not aware enough, and this mass awareness/"political will" will come too late.
IMHO by the time most people are aware of the doom upon us, "the enemy at the gates" stage, there will not be enough physical capability to solve the problem, and certainly not enough cooperation as everyone scrambles to survive against diminishing odds, as they realize the mess won't ever be solved. I am certain war and strife will happen way before global unity.
See how we fight among ourselves in this forum, as we realize the mess won't ever be solved (unless
insert your favorite here, but it won't happen sorry).
So Green BAU as you call it is grasping at straws as we are drowning, but is the only thing remaining at the present quandary. I am quite sure it won't be the thing that kills us, but rather the logical thing to do when there's no wood around and some straw is floating along.
And if some claim they believe it
will save us wholly or partially, it just might encourage us to grasp that straw and increase our survival chances. We don't have other
real options anyway, so
it can't hurt to try.
Note: some claim Green BAU
can hurt future humanity by using precious resources now, thus making them scarcer following the inevitable civilizational collapse, so the best solution is managed collapse now. Possibly true, but my operational stance is to ignore this, focusing on present humanity.