mally fixed, however, between the engineer
and the inventor, most of the definite progress of the world for
the past one hundred years has been done by the co-ordination of
the two; a co-ordination accomplished by "the man of business."

Now the inventor and engineer type do not exist only in the world
of engineering and mechanics, though it is in that world that they
are the most clearly recognized; for they exist in all walks of
life. In literature, inventors write novels; in business life,
they project railroads; in strategy, they map out new lines of
effort. In literature, the engineer writes cyclopaedias; in business,
he makes the projected railroads a success; in strategy, he works
out logistics and does the quantitative work.

In that part of strategy of which we are now thinking--the designing
of the naval machine--the inventor and the engineer clearly have
two separate lines of work: one line the conceiving, and the other
line the constructing, of strategic and tactical methods, and of
material instruments to carry out those methods. 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. Of course, this does not mean
that the game-board can decide questions with absolute finality. It
cannot do this; but that is only becau