Sad part is we’ve more or less figured out on paper how to cut our emissions while retaining a fairly high quality of life. Not perfect obviously and we’ll lose a lot of the amenities people in developed countries have gotten used to, but to say the path to sustainability is uncharted is simply not true, and it could have been implemented 20 years ago, it can also be implemented today. But it would require gutting the wealth of the rich, totally overhauling the economy, government, and society as a whole, and everyone from all socioeconomic statuses agreeing that it should be done. So it’s basically impossible under capitalism. Most of the upper class/upper middle class people in the West won’t even entertain the idea of not owning a car, living in an apartment, or cutting out meat from their diets, let alone the radical changes needed for our species to actually be sustainable.