There's really nothing magical about 10 years vs. 4 - the further out you go, the more you have to discount the predictive value. Is there some evidence that,

There's really nothing magical about 10 years vs. 4 - the further out you go, the more you have to discount the predictive value. Is there some evidence that, in general, there's market skepticism about MS' long-term future? Sure. But this "4-year" business is just absurd.