“…Bergstrom's graduate students over a number of years in the 1960s [194], as well as Ross Preston [197] during much the same time, quite independently all wrote, or were closely associated with the writing of, programs to implement or study specific econometric techniques -but apparently not originally for the conscious purpose of writing 'econometric software' for it's own sake. In contrast, others, among them Robert Hall, Michael McCracken, and Clifford Wymer in the mid-1960s [25,26,160,162,163,165,192,204,211], and David Hendry at the end of the 1960s [114,115], wrote programs the direct descendants of which still exist and which affected the development of other programs. Demonstrably, each of these economists, as well as others, consciously sought to develop more broadly defined and generally applicable software that has evolved over time, regardless of whether this destiny was at first foreseeable.…”