The caution has already been repeated more than once, that while the regulating norm of consumption is in large part the requirement of conspicuous waste, it must not be understood that the motive on which the consumer acts in any given case is this principle in its bald, unsophisticated form.

Ordinarily his motive is a wish to conform to established usage, to avoid unfavorable notice and comment, to live up to the accepted canons of decency in the kind, amount, and grade of goods consumed, as well as in the decorous employment of his time and effort.

In the common run of cases this sense of prescriptive usage is present in the motives of the consumer and exerts a direct constraining force, especially as regards consumption carried on under the eyes of observers.

But a considerable element of prescriptive expensiveness is observable also in consumption that does not in any appreciable degree become known to outsiders--as, for instance, articles of underclothing, some articles of food, kitchen utensils, and other household apparatus designed for service rather than for evidence.

In all such useful articles a close scrutiny will discover certain features which add to the cost and enhance the commercial value of the goods in question, but do not proportionately increase the serviceability of these articles for the material purposes which alone they ostensibly are designed to serve.
Under the selective surveillance of the law of conspicuous waste there grows up a code of accredited canons of consumption, the effect of which is to hold the consumer up to a standard of expensiveness and wastefulness in his consumption of goods and in his employment of time and effort.