The rabbinic classics - the Mishnah, the Tosephta, the Halakhic Midrashim, the Talmudim
, and the Homiletic Midrashim - do not announce their own authorship.
Many of Kalmin's new and pointed historical conclusions result from this comparison between the two Talmudim
. Thus, for example, he shows in chapter two that when the Talmudim
deal with Jewish history in the time of the Second Temple, the Jerusalem Talmud talks about the customs of people like kings and priests, while the Babylonian Talmud talks about rabbis.