 Such phenomena are sometimes offered to validate the viewpoint that the Written Law has always been transmitted with a parallel oral tradition, illustrating the assumption that the reader is already familiar with the details from other, i.e., oral, sources.Halakha, the rabbinic Jewish way of life, then, is based on a combined reading of the Torah, and the oral tradition—the Mishnah, the halakhic Midrash, the Talmud and its commentaries.The Halakha has developed slowly, through a precedent-based system.