Clearly, these two lines of work while independent are mutually dependent; and, if properly carried out are mutually assistant.

The coworking of the inventor and the engineer is a little like that coworking of theory and practice, which has been the principal factor in bringing about the present amazing condition of human society commonly called "Modern Civilization." The shortcomings of human speech are most evident in discussing complicated matters; and for this reason speech is supplemented in the engineering arts by drawings of different kinds.

No man ever lived who could describe a complicated machine accurately to a listener, unless that machine differed but little from a machine with which the listener was acquainted.

But hand a drawing of even a very complicated machine to a man who knows its language--and the whole nature of the object is laid bare to him; not only its general plan and purpose, but its details, with all their dimensions and even the approximate weights.

So, when the forces representing a complicated naval situation are placed upon the game-board, all the elements of the problem appear clearly and correctly to each person; the imagination has little work to do, and the chance for misunderstanding is almost negligible.