Økosof / ecophilosopher and world famous Norwegian professor of philosophy Arne Næss (1912-2009) often said he was an optimist for the 22nd century, stressing that things had to get a hell of a lot worse before getting better.
Næss says in his Ecosophy T in the final of his famous Eight Points, that anyone who acknowledges the previous points has an obligation to go out and seek change, and to be the change. Domestically he argues that young eco-activists have an obligation to be the speartip of change, using civil disobedience, eco-sabotage and NVDA - non-violent direct action - in order to change the course of human history.
Changing a whole society from its collision course with the ecosystems is obviously a very slow process. Yet it's not slow simply because Things Take Time. It is painstakingly slow primarily because status quo powers are in a position to define the nature of our challenges. Because they decide and shape science (yup, even science is corruptable) and primarily the way science is presented to the general public through our mass media.
So it's not just a matter of taking a few extra decades implementing the changes that impatient environmentalists want implemented NOW, it is more like using the careful least drama scenarios from 20 years ago when finally starting a minute transition of fatal emissions 20 years down the road.
A natural reaction for a human being - even for an environmentally minded human being - is to embrace what little change there is to the ecocidal course of the corporate elite. We need optimism, they say, in order to change things, together with the criminal corporate elites and polluticians. Realists who point out how late they come and how minute and inadequate these changes are, are easily excluded and made into scapegoats: They are of course right, but they say things the public does NOT want to hear. Not now. Not any time.
Embracing Darkness and embracing our darkest thoughts and feelings does, however, have its merits. If we can reason without fear - and some of us do have that rare skill - we can more adequately see the whole picture - not just the pleasant parts - and figure out where this ship is heading. The course is virtually locked on collapse and ecocide. That is the hard truth. The truth we'd all face if we dared look closely. Which means it is the truth (denial doesn't change reality, if anyone thought so).
Yet, civilizational collapse and ecocide are in fact two very different things. True, they are related and may very well occur at the same time. But the degree of ecocide, or the completeness of the distruction of life on Earth, may vary depending on the nature and timing of the collapse of civilization. In a nutshell, an earlier collapse of civilization could mean less hardship for all the other living beings on this planet.
I believe the great ecophilosopher Næss had these things in mind when he said he was an optimist for the 22nd century. There will be a crash, and it will be utterly devastating, but it won't be the end of all life. At least not in a business-as-usual (BAU) scenario.
Life will return, evolve, florish and expand on a constantly greening planet!