The characteristic in which these business employments resemble one another, and in which they differ from the mechanical occupations as well as from other non-economic employments, is that they are concerned primarily with the phenomena of value--with exchange or market values and with purchase and sale--and only indirectly and secondarily, if at all, with mechanical processes. What holds the interest and guides and shifts the attention of men within these employments is the main chance. These activities begin and end within what may broadly be called "the higgling of the market." Of the industrial employments, in the stricter sense, it may be said, on the other hand, that they begin and end outside the higgling of the market. Their proximate aim and effect is the shaping and guiding of material things and processes. Broadly, they may be said to be primarily occupied with the phenomena of material serviceability, rather than with those of exchange value. They are taken up with phenomena which make the subject matter of Physics and the other material sciences. The business man enters the economic life process from the pecuniary side, and so far as he works an effect in industry he works it through the pecuniary dispositions which he makes. He takes thought most immediately of men's convictions regarding market values; and his efforts as a business man are directed to the apprehension, and commonly also to the influencing of men's beliefs regarding market values. The objective point of business is the diversion of purchase and sale into some particular channel, commonly involving a diversion from other channels. The laborer and the man engaged in directing industrial processes, on the other hand, enter the economic process from the material side; in their characteristic work they take thought most immediately of mechanical effects, and their attention is directed to turning men and things to account for the compassing of some material end. The ulterior aim, and the ulterior effect, of these industrial employments may be some pecuniary result; work of this class commonly results in an enhancement, or at least an alteration, of market values. Conversely, business activity may, and in a majority of cases it perhaps does, effect an enhancement of the aggregate material wealth of the community, or the aggregate serviceability of the means at hand; but such an industrial outcome is by no means bound to follow from the nature of the business man's work.