> It's never too late to stop making things worse.
I don't know, we could already be stuck in a positive feedback loop with no hope of reversing the trend until the pendulum swings back in another 10k years. That's the difficulty with climate science, there are so many variables and the system is so complex that analysis is extremely difficult.
EDIT: Just to be clear, I'm not saying we can't do ANY analysis or that we can't see the larger trends... just that the devil is in the details and we can't predict exactly what's going to happen or when.
There are large costs associated with changing what we're doing and in absence of being able to actually control the climate, those resources would be better spent on dealing with the outcome.
If you're standing downhill from an avalanche that you set off when you clapped your hands, making sure no one claps will not be your chief concern.
It's never too late to stop making things worse. And if we don't change our emissions it's going to get much worse.