In the show "3 Body Problem" (I haven't read the book) the statement was made 'our civilization is no longer capable of solving its own problems'. Would you agree?

I'm partial to the notion of memetic evolution, which is to say that humans have a concurrent driver of behavior besides our genes. Less so than capability or willingness, I tend to believe that some of the memes driving us are too successful, if that makes sense. They perfectly capitalize on the foibles of the human organism and I just don't believe we're able to surmount that. The only likely way out is running through the painful cycle described in another comment here. We need to suffer sufficiently to initiate a change in the ideas by which we operate