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590 Wandering Jew' acquires abstract terms with which to describe the various scenes which he visits. His knowledge of the world is based upon identities and differences, that is to say, on analysis and classification. Reared in intimate association with the bustle and business of the market place, constantly intent on the shrewd and fascinating game of buying and selling in which he employs that most interesting of abstractions, money, he has neither opportunity nor inclination to cultivate that intimate attachment to places and persons which is characteristic of the immobile person.

Concentration of populations in cities, the wider markets, the division of labor, the concentration of individuals and groups on special tasks, have continually changed the material conditions of life, and in doing this have made readjustments to novel conditions increasingly necessary. Out of this necessity there have grown up a number of special organizations which exist for the special purpose of facilitating these readjustments. The market which brought the modern city into existence is one of these devices. More interesting, however, are the exchanges, particularly the stock exchange, and the board of trade, where prices are constantly being made in response to changes or rather the reports of changes in economic conditions all over the world. These reports, so far as they are calculated to cause readjustments, have the character of what we call news. It is the existence of a critical situation which converts what were otherwise mere information into news. Where there is an issue at stake; where, in short, there is crisis, there information which might affect the outcome one way or another becomes "live matter," as the newspaper men say. Live matter is news; dead matter is mere information.


 * What is the relation of mobility to suggestion, imitation, etc.?


 * What are the practical devices by which suggestibility and mobility are increased in a community or in an individual?


 * Are there pathological conditions in communities corresponding to hysteria in individuals? If so, how are they produced and how controlled?


 * To what extent is fashion an indication of mobility?


 * What is the difference in the manner in which fashions and customs are transmitted?