It follows from what has been said that all tangible[10] assets owe their productivity and their value to the immaterial industrial expedients which they embody or which their ownership enables their owner to engross. These immaterial industrial expedients are necessarily a product of the community, the immaterial residue of the community's experience, past and present; which has no existence apart from the community's life, and can be transmitted only in the keeping of the community at large. It may be objected by those who make much of the productivity of capital that tangible capital goods on hand are themselves of value and have a specific productive efficiency, if not apart from the industrial processes in which they serve, then at least as a prerequisite to these processes, and therefore a material condition-precedent standing in a causal relation to the industrial product. But these material goods are themselves a product of the past exercise of technological knowledge, and so back to the beginning. What there is involved in the material equipment, which is not of this immaterial, spiritual nature, and so what is not an immaterial residue of the community's experience, is the raw material out of which the industrial appliances are constructed, with the stress falling wholly on the "raw." The point is illustrated by what happens to a mechanical contrivance which goes out of date because of a technological advance and is displaced by a new contrivance embodying a new process. Such a contrivance "goes to the junk-heap," as the phrase has it. The specific technological expedient which it embodies ceases to be effective in industry, in competition with "improved methods." It ceases to be an immaterial asset. When it is in this way eliminated, the material repository of it ceases to have value as capital. It ceases to be a material asset. "The original and indestructible powers" of the material constituents of capital goods, to adapt Ricardo's phrase, do not make these constituents capital goods; nor, indeed, do these original and indestructible powers of themselves bring the objects in question into the category of economic goods at all. The raw materials--land, minerals, and the like--may, of course, be valuable property, and may be counted among the assets of a business. But the value which they so have is a function of the anticipated use to which they may be put, and that is a function of the technological situation under which it is anticipated that they will be useful. * * * * *