We can model what can happen. Using the “we have no idea” logic, we don’t know what happens if we reduce carbon output to 0 and wait 100 years. It’s not that

We can model what can happen. Using the “we have no idea” logic, we don’t know what happens if we reduce carbon output to 0 and wait 100 years. It’s not that geoengineering is the answer, it’s that it might be. We can model and do tests until we have confidence. What is the other alternative? Just let billions suffer and millions die?