Ideas and People

Ideas, as well as people, can take [blank] stage at the right time and the right place. If new ideas are to have a wide-ranging [blank] , they had better occur at the right time - usually when old theories are worn out or have reached a dead [blank] . Then they make people think along new lines and in ways that may [blank] in unexpected directions. These ideas needn't be new in themselves. They can be older, half-forgotten ideas brought back to life, or new combinations of [blank] ones presented in a new light.