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Increasing Human Efficiency in Business, a contribution to the psychology of business by Walter Dill Scott
page 99 of 335 (29%)



All sources of illumination--from the candle
to the sun--send out rays of light equally
in all directions. If illumination of only _*one_
point is desired, the loss is appalling. The rays
may be assembled, however, by reflectors and
lenses and so brought to bear in great force
at a single point.

This brilliancy is not secured by greater
expenditure of energy, but by utilizing the
rays which, except for the reflectors and lenses,
would be dissipated in other directions.

_As any source gives off equally in all directions,
so the human intellect seems designed to respond
to all forms and sorts of appeal for attention_.

To keep light from going off in useless directions
we use reflectors; to keep human energy
from being expended in useless directions we
must remove distractions. To focus the light
at any point we use lenses; to focus our minds
at any point we use concentration.

Concentration is a state secured by the mental
activity called attention. To understand
concentration we must first consider the more
fundamental facts of attention.

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