I have never read a book like this before. I'm not done--it is my book so I can read a chapter here and a chapter there. Here is an example of what one will find in these pages: "The undisturbed continuity of Jewish life [in the area] may also explain the absence of Jewish written sources in the period until the eleventh century. Silence in history and linguistics may be interpreted in many ways. It may account for well-being as well as for the opposite, although times of persecution in Jewish history have always yielded written evidence in the form of lamentations and chronicles. . . ." And a random page in the middle of the book: "In the historiography of oldest Yiddish the contrast between documentary extrapolation and reconstruction is rather more stark than on average. . . . there is virtually nothing surviving in the vernacular from the earliest generations of Ashkenazic history in medieval central Europe...." And so on. What can I say? I love this stuff.