I know a lot of people who are very good at their craft who have learned - people behind the camera - who really have a lot to offer because they know what they're doing, they know what to do, they've made their mistakes.
In 1960 I published a book that attempted to direct attention to the possibility of a thermonuclear war, to ways of reducing the likelihood of such a war, and to methods for coping with the consequences should war occur despite our efforts to avoid it.

