When Boeing prepared to launch the design of the 727 passenger plane in the 1960s, its managers set a goal that was deliberately concrete: The 727 must seat 131 passengers, fly nonstop from Miami to New York City, and land on Runway 4-22 at La Guardia. (The 4-22 runway was chosen for its length—less than a mile, which was much too short for any of the existing passenger jets.)
- a cool example of ~ find a concrete language that everyone speaks fluently/~ be concrete