A revolution has occurred, but most people, it seems, have not noticed. I refer to the worldwide effort to digitalize the great medieval Jewish manuscript tradition. The result is a brave new world, in which these precious treasures of the Jewish past are now available to scholars, students, and the public at large. As far as I can tell, this major enterprise has not received the attention it deserves, while the use of these manuscripts has not yet been fully integrated into the teaching of Jewish Studies. I, for one, have become an evangelist for the cause, as reflected by the fact that during the past decade, more and more of my teaching, research, and lecturing has been devoted to these manuscripts.