The question really is if going to something 'harder' now is worth while. We do something more expensive (and have large oppertunity cost) to avoid problem we w

The question really is if going to something 'harder' now is worth while. We do something more expensive (and have large oppertunity cost) to avoid problem we will only really have in 200 years. If you look at the change of technology in the last 100 years you can only assume how small this problem will be then. I mean in 200 years using solar energy will possibly be cheaper then fossil fuel, and if it is not we will be better equiped to solve the problem then. I do not want to say that we should not keep working in direction of renewable energy but I think it is a valid question.