Well, I'm actually going to write a full post on this (I'm trying for today - but no promise). In short, as I eluded in the article, I put it in the same category as the "faster-than-light" neutrino. We know that this star has an interesting and unique history (it originated in a primitive dwarf galaxy and has since been ejected and is making a very fast pass into the Milky Way). As a result of its speed and history our current methods for dating the star may simply not be up to the task of determining its age. In 2000 we thought the star was 16 billion years old - now we think it is 14.5 billion years old. With more data and better techniques its age could be brought down further. From the nature of the star itself it could be a relic of one of the first stars born. Or maybe I'm wrong and we start finding a bunch of other stars of this age - and then we have to reconsider everything. But that is less likely. EDIT: