Some motion towards a further revision of the scheme is to be seen in the attention which has latterly been given to the function and the profits of that peculiar class of undertakers whom we call speculators. But even on this head the argument is apt to turn on the question of how the services which the speculator is conceived to render the community are to be construed into an equivalent of his gains.[6] The difficulty of interpretation encountered at this point is considerable, partly because it is not quite plain whether the speculators as a class come out of their transactions with a net gain or with a net loss. A systematic net loss, or a no-profits balance, would, on the theory of equivalence, mean that the class which gets this loss or doubtful gain is of no service to the community; yet we are, out of the past, committed to the view that the speculator is useful--indeed economically indispensable--and shall therefore have his reward. In the discussions given to the speculator and his function some thought is commonly given to the question of the "legitimacy" of the speculator's traffic. The legitimate speculator is held to earn his gain by services of an economic kind rendered the community. The recourse to this epithet, "legitimate," is chiefly of interest as showing that the tacit postulate of a natural order is still in force. Legitimate are such speculative dealings as are, by the theorist, conceived to serve the ends of the community, while illegitimate speculation is that which is conceived to be disserviceable to the community. The theoretical difficulty about the speculator and his gains (or losses) is that the speculator _ex professo_ is quite without interest in or connection with any given industrial enterprise or any industrial plant. He is, industrially speaking, without visible means of support. He may stake his risks on the gain or on the loss of the community with equal chances of success, and he may shift from one side to the other without winking.