[youtube]vZTcth92nHE[/youtube]
Not all science papers/talks are about the researcher presenting a new discovery, or persuading you that their model of something works and that they understand it and how useful it is for science that they understand it. In this case the claim is that something is weird with the stellar populations in globular clusters, which is quite inconvenient for our understanding of them, and that all the models that have tried to explain this so far in fact do not work.
I
love these kinds of talks.