The laws expressing the relations between energy and matter are, however, not solely of importance in pure science. They necessarily come first in order. . . in the whole record of human experience, and they control, in the last resort, the rise or fall of political systems, the freedom or bondage of nations, the movements of commerce and industry, the origin of wealth and poverty, and the general physical welfare of the race.
There's always a crisis somewhere, and you get the satisfaction of solving the problem. And then, there's always the mystery of whether a program will work or not, and waiting for the reviews or seeing what the audience figures are.