Or instead of relying on essentially magic we could deploy current and known solutions that will solve the problem, but we will have to invest real $, conserve, and consume less. Sadly, there’s no chance practical solutions that require worldwide coordination will work as humans, especially those with money and power, are generally selfish.
Current known solutions cost much less than carrying on as we are. Current economic winners, who are personally responsible for the looming catastrophe, would take in less.