An analysis of these phenomena on lines similar to those which have been followed in the discussion of assets above is not without difficulty, nor can it fairly be expected to yield any but tentative and provisional results. The matter has received so little attention from economic theoreticians that even significant mistakes in this connection are of very rare occurrence.[14] The cause of this scant attention to these matters lies, no doubt, in the relative novelty of the facts in question. The facts may be roughly drawn together under the caption "Traffic in Vendible Capital"; although that term serves rather as a comprehensive designation of the class of business enterprise from which these gains accrue than as an adequate characterisation of the play of forces involved.[15] Traffic in vendible capital has not been unknown in the past, but it is only recently that it has come into the foreground as the most important line of business enterprise. Such it now is, in that it is in this traffic that the ultimate initiative and discretion in business are now to be found. It is at the same time the most gainful of business enterprise, not only in absolute terms, but relatively to the magnitude of the assets involved as well. One reason for this superior gainfulness is the fact that the assets involved in this traffic are at the same time engaged as assets to their full extent in ordinary business, so that the peculiar gains of this traffic are of the nature of a bonus above the earnings of the invested wealth. "It is like finding money."