132. Acculturation versus parallelism. The facts in regard to making and using stone implements bring up the question whether such arts have a single origin and are spread by contagion (acculturation), or are invented independently by many people who have the same tasks to perform, and the same or similar materials at hand (parallelism). Lippert227 says that "the different modes of fashioning flint arrowheads show us that we must not think of the earliest art as all tied to a single tradition, and carried away from this. On the contrary, human ingenuity has set about accomplishing the acts which are necessary for the struggle for existence in different places, with the elements there at hand." We have seen above that the materials may, from their character, so limit and condition the operations of manufacture as to set lines for the development of the art. If the processes of the men are also limited and conditioned by the nature of human nerves and muscles so that they must run on certain lines, it would follow that the human mind also, in face of a certain problem, will fall into conditioned modes of activity, and we should approach the doctrine that men must think the same thoughts by way of mental reaction on the same experiences and observations.
The facts, however, show that an art, beginning in the rudest way, is produced along lines of concurrent effort, and is the common property of the group. All practice it as it is, and all are unconsciously coöperating to improve it. The processes are folkways. The artifacts are tools and weapons which, by their utility, modify the folkways and become components in them. The skill, dexterity, patience, ingenuity, and power of combination which result are wider and higher possessions which also modify the folkways at later stages of effort. The generalizations of truth and right widen at every stage, and produce a theory of welfare, which must be recognized as such, no matter how rude it may be. It consists in the application of the notions of goblinism as they are prevalent at the time in the group. The art itself is built up by folkways according to their character as everywhere exhibited, for arts are modes of providing for human necessities by processes and devices which can be universally taught, and can be handed down forever. The arts of an isolated group run against limits, even if the group has great ingenuity, as we see in the case of China. It is when arts are developed by give and take between groups that they reach their highest development. The wider the area over which the coöperation and combination are active, the higher will be the achievements. "Every art is born out of the intelligence of its age."228 It has been mentioned above that Polynesians cannot use an ax. They want to set the blade transverse to the handle. The negroes of the Niger Protectorate are very clumsy at going up or down stairs. It is a dexterity, not to say an art, which they have had no chance to acquire. They also find it very difficult to understand or interpret a picture, even of the least conventional kind.229 The Seri of Tiburon Island have not the knife habit. They draw a knife towards the body instead of pushing it away.230 Hence we see that the lack of a habit, or lack of opportunity to see a dexterity practiced, constitutes a narrowing of the mental horizon.
133. Fire-making tools. Another art which would offer us parallel phenomena to that of stone working is that of fire making. It must have had several independent centers of origin. It existed all over the globe. Its ultimate origin is unknown to us. It may have originated in different ways at different centers. The simplest instruments for making fire can be classified according to the mode of movement employed in them as drilling, plowing, and sawing instruments. The fire drills have also undergone very important development and improvement, so that they have become very complicated machines. The ingenuity and inventive skill which were required to make a fire drill which was driven by a bow were as great as the same powers when manifested by an Edison or a Bessemer.
134. Psychophysical traits of primitive men. All the artifacts were made and all the arts were produced by the concurrent efforts of men to serve their interests. We find that primitive men put patient effort and astonishing ingenuity into their tools. They also attained to great skill in the use of clumsy tools. It is true, in general, of primitive men that they shirk all prolonged effort or patient application, but they do use great patience and perseverance when they expect to accomplish something of great importance to their interests. The same is true if they expect to gratify their vanity. In hair dressing or tattooing they submit to very irksome restraint prolonged through a long time. Also in feather work, partly useful and partly ornamental, they assorted feathers piece by piece, and enlaced the feathers in the meshes of their hats and caps, or fastened them into scepters with pitch. They could make houses, etc., with their axes only by long-continued industry.231 South American Indians made tools for printing tattoo patterns on the body. They were blocks, on each face of which a pattern was raised, perhaps a different one on each side.232 It should be noticed what prodigious power a large body of men can put forth when they all work at the same task and are greatly interested in it. They begin by the same process, but the process differentiates and improves in their hands. Each gains skill and dexterity. They learn from each other, and the product is multiplied.
135. Language. Language is a product of the folkways which illustrates their operation in a number of most important details. Language is a product of the need of coöperative understanding in all the work, and in connection with all the interests, of life. It is a societal phenomenon. It was necessary in war, the chase, and industry so soon as these interests were pursued coöperatively. Each group produced its own language which held that group together and sundered it from others.233 All are now agreed that, whatever may have been the origin of language, it owes its form and development to usage. "Men's usage makes language." "The maxim that 'usage is the rule of speech' is of supreme and uncontrolled validity in every part and parcel of every human tongue."234 "Language is only the imperfect means of men to find their bearings in the world of their memories; to make use of their memory, that is, their own experience and that of their ancestors, with all probability that this world of memory will be like the world of reality."235 The origin of language is one of those origins which must ever remain enveloped in mystery. "How can a child understand the combinations of sound and sense when it must know language in order to learn them? It must learn to speak without previously knowing how to speak, without any previous suspicion that the words of its mother mean more than the buzzing of a fly. The child learns to speak from an absolute beginning, just as, not the original man, but the original beast, learned to speak before any creature could speak."236 The beasts evidently did not learn to speak. They only learned to use the beast cries, by which they transmitted warnings, sex invitations, calls to united struggles, etc. The cries answered the purpose and went no further. Men, by virtue of the expanding power in them which enthused their zeal and their play, broke through the limitations of beast language, and went on to use the sounds of the human speech instrument for ever richer communications. Poetic power in blossom guides the development of a child's language as it guided that of the men who made the first languages.237 "The original languages must be, in comparison with our languages, like the wildest love-passion compared with marital custom."238 Every