The legend, lest it be a true story, tells of how the late mathematician, Professor Haim Hanani, asked his students at the Technion to draw up a plan for constructing a pipe to transport blood from Haifa to Eilat. The obedient students did as they were told. Using logarithmic rulers, they sketched the design for a sophisticated pipeline. They meticulously planned its route, taking into account the landscape's topography, the possibility of corrosion, the pipe's diameter and the flow calibration. When they presented their final product, the professor rendered his judgment: You failed. None of you asked why we need such a pipe, whose blood will fill it, and why it is flowing in the first place.