noindent Olivier will descuss about cond-mat/9806119 Other papers to read/skim through, especially for later discussions are: arXiv:1604.07818 Comments on the Sachdev-Ye-Kitaev model, Juan Maldacena, Douglas Stanford the KITP talks by Kitaev: A. Kitaev, “A simple model of quantum holography.'' http://online.kitp.ucsb.edu/online/entangled15/kitaev/ http://online.kitp.ucsb.edu/online/entangled15/kitaev2/ and Polchinski & Rosenhaus arxiv:1601.06768