> To picture that dimension, Vafa said, think of every point on the imagined surface of our four-dimensional world and attach a small loop to it. That loop is (at least schematically) the extra dimension.

So I'm not a physicists and don't have much more than a layman's understanding of all this. But isn't this just Kaluza-Klien all over again, and how is it any different than string theory?

Like really honestly for me the bigger headline is that "String theorist makes testable prediction".