the onset and consequences of social change are often unforeseen
the inventors of the the atomic bomb in the early 1940s could not predict the vast changes in the character of international, including a cold war that lasted until the demise of the soviet union in the early 1990s
television pioneers , who envisioned a mode of mass communication more compelling than radio, could no predict television would become and a dominant force in determining the interests and habits oh youth and the activities and structure of the family.