Originally published in educational Horizons Summer 1996. We cannot get grace from gadgets. It doesn't matter, because there is abundant evidence that it is not true.
Lecture is the most widely used teaching method.
Windows 95 is Mac 89. Edward Land invented the single-gun TV tube in the 1950s. The patent was bought from him by a company that had been developing the three-gun tube. His invention was buried in a vault, to be resurrected only after the Japanese had independently developed the one-gun tube on their own and captured a major share of the American market. Technical innovation presumably pursues efficiency.