1. Extension of Meaning of Primary Activities. Nothing is more striking than the difference between an activity as merely physical and the wealth of meanings which the same activity may assume. From the outside, an astronomer gazing through a telescope is like a small boy looking through the same tube. In each case, there is an arrangement of glass and metal, an eye, and a little speck of light in the distance. Yet at a critical moment, the activity of an astronomer might be concerned with the birth of a world, and have whatever is known about the starry heavens as its significant content. Physically speaking, what man has effected on this globe in his progress from savagery is a mere scratch on its surface, not perceptible at a distance which is slight in comparison with the reaches even of the solar system. Yet in meaning what has been accomplished measures just the difference of civilization from savagery. Although the activities, physically viewed, have changed somewhat, this change is slight in comparison with the development of the meanings attaching to the activities. There is no limit to the meaning which an action may come to possess. It all depends upon the context of perceived connections in which it is placed; the reach of imagination in realizing connections is inexhaustible. The advantage which the activity of man has in appropriating and finding meanings makes his education something else than the manufacture of a tool or the training of an animal. The latter increase efficiency; they do not develop significance. The final educational importance of such occupations in play and work as were considered in the last chapter is that they afford the most direct instrumentalities for such extension of meaning. Set going under adequate conditions they are magnets for gathering and retaining an indefinitely wide scope of intellectual considerations. They provide vital centers for the reception and assimilation of information. When information is purveyed in chunks simply as information to be retained for its own sake, it tends to stratify over vital experience. Entering as a factor into an activity pursued for its own sake--whether as a means or as a widening of the content of the aim--it is informing. The insight directly gained fuses with what is told. Individual experience is then capable of taking up and holding in solution the net results of the experience of the group to which he belongs--including the results of sufferings and trials over long stretches of time. And such media have no fixed saturation point where further absorption is impossible. The more that is taken in, the greater capacity there is for further assimilation. New receptiveness follows upon new curiosity, and new curiosity upon information gained.