alt Hacker News> the damage has already been done
"I lost a finger, the damage has already been done. No need saving my arm, you can go ahead and cut it".
Unless you meant "Damage has already been done, there is a lot we won't get back. And that's exactly why we should now fight to preserve what we can"?
That's not what I am saying at all, I am just pointing out that venturing to 2 degrees (or more) and back to 1.5 degrees incurs the cost. Maybe it's well-known at this point, and I am just stating the obvious; but it's not my general impression.