Such changes carry with them modifications in the interests and points of view of those they affect. They make it possible to modify group and individual reaction. The public relations counsel, too, can modify the results of the changed external condition by calling attention to it or interpreting it in terms of the interest of those affected. The radio might be taken as an example. In considering the radio from the standpoint of his work, the public relations counsel has a new medium which can readily reach huge sections of the public with his message. The public relations counsel must be ready to estimate, too, what difference in viewpoint the radio will produce or has produced in any given section of the public it reaches. He will have to consider, for instance, that due to it the average farmer is much more closely in contact with the world’s events than formerly. In the case of the radio, too, if his clients be, for instance, large manufacturers of radio supplies and demand acceleration of this changed external condition in order to increase their business, he may enlarge the radio’s field, activity and effectiveness. Or, he may stress to the public the importance of this new instrument and strengthen its prestige, so that it may better fulfill its mission as a modifier of conditions. Changed conditions can make possible modifications in the public point of view, as can be instanced by a campaign carried on by savings banks to encourage thrift. This campaign was successful at that time because inflation made it easy for the public to see the wisdom of the doctrines preached and to act upon them. Another example of this modification in the public point of view due to a changed condition was the demand made by the Executive Committee of the Central Trades and Labor Council of New York for the government to take over the railways of the country. Public ownership had been a pet subject for school debate for more than two decades, but it had seldom passed into the field of serious consideration by the general public. Yet the conditions of hardship created by the last strike of the railroad shopmen caused a much greater receptivity in the public mind to this idea. The airplane slowly emerges as an important factor in the daily life of the people. What it will mean in the psychology of the nation when commuters can settle within a radius of a hundred or more miles of cities is only to be guessed at. Cities may cease to exist except as industrial centers. There will be greater groups and broader interests. There will be fewer geographic divisions.