This sort of thinking, which has been enjoyed by many great sci-fi writers over the last ~seventy years, is cool on one hand, and is the sort of thing I enjoyed

This sort of thinking, which has been enjoyed by many great sci-fi writers over the last ~seventy years, is cool on one hand, and is the sort of thing I enjoyed in high school. But it turns out that the big problems facing us aren't exclusively technological. Renewable energy is an example of a technological problem; greed is an example of a psycho-cultural one. Both are vitally important to address, but sci-fi authors have generally tackled the technical problems and not the cultural ones.