so much by their interdisciplinary nature as by their similar method of investigation.15 Both my text-critical and source-critical views had put a premium on the external data—and frankly, on a very mechanical approach to them. But, as Günther Zuntz noted, “At every stage the critic has to use his brains. Were it different, we could put the critical slide-rule into the hands of any fool and leave it to him to settle the problems of the New Testament text.”16 I began to read the same journal articles,