In other words, there is a series of phenomena of great importance which cannot possibly be recorded by questioning or computing documents, but have to be observed in their full actuality. Let us call them the imponderability of actual life. Here belong such things as the routine of a man's working day, the details of his care of the body, of the manner of taking food and preparing it; the tone of conversational and social life around the village fires, the existence of strong friendships or hostilities, and of passing sympathies and dislikes between people; the subtle yet unmistakable manner in which personal vanities and amitions are reflected in the behaviour of the individual and in the emotional reactions of those who surround him. All these facts can and ought to be scientifically formulated and recorded, but it is necessary that this be done, not by a superficial registration of details, as is usually done by untrained observers, but with an effort at penetrating the mental attitude expressed in them. And that is the reason why the work of scientifically trained observers, once seriously applied to the study of this asptct, will, I believe, yield result of surpassing value. So far, it has been done only by amateurs, and therefore done, on the whole, indifferently.

Bronislaw Malinowski (1922): From the Introduction to Argonauts of the Western Pacific, p.18-19