ABSTRACT
A girl clerk who makes her own blouses, when she considers making a new one, has to decide whether the pleasure a new blouse will afford her will be worth the labour involved in making it. (For the sake of simplicity we will imagine that she already possesses the materials). If we wish to be very technical we can say that she had to balance the marginal utility of blouses against the mar ginal disutility of making them. As we know, with every additional blouse the marginal utility will be less, while generally it may be assumed that with every hour spent on blouse-making the marginal disutility will tend to be greater. It is quite possible to make a mistake in a decison of this kind and to regret making a blouse or leaving it un-made as the case may be, but the decision is a fairly straightforward and simple one, only involving an estimate of the decider's own future opinions.
