The Birth of Doubt

In the history of halakhah, the treatment of uncertainty became one of the most complex fields of intense study. In his latest book, Moshe Halbertal focuses on examining the point of origin of the study of uncertainty in early rabbinic literature, including the Mishnah, Tosefta, and halakhic midrashim. The book explores instructions concerning how to behave in situations of uncertainty ranging from matters of ritual purity, to lineage and marriage, to monetary law, and to the laws of forbidden foods. This examination of the rules of uncertainty introduced in early rabbinic literature reveals that these rules were not aimed at avoiding but rather at dwelling in the midst of uncertainty, thus rejecting the sectarian isolationism that sought to minimize a community's experience of and friction with uncertainty.