http://online.kitp.ucsb.edu/online/strings05/atiyah/ My personal hunch is that Atiyah could be nudging towards an extremely interesting reformulation of quantum mechanics. a fertile new "paradigm" or way to look at it. Liked this talk VERY much. only wish he hadnt been interrupted by the KITP people so much, looked like he had to skip over half his prepared transparency notes because so much of the hour was taken up by a competing "lecture" by someone (DG) in the audience. Any reactions from others? Does anyone know any other online source for these Atiyah ideas?