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.