We can assume that the story of SSP$2($Middle of the road$)$ is not precisely true, because it is making a lot of assumptions about things that havent occurred yet. What is the function of the story that is associated with the model in SSP$2?$ If the future is nothing like the story, does that make all the model runs using SSP$2$ redundant? What is the storys purpose? And: What is your reaction to this particular story about the future?