It has been estimated that "the diminution of manual labor required to do a given quantity of work in 1884 as compared with 1870 is no less than 70 per cent."[11] Personal interest in and the old native sense of responsibility for results, ownership and use of the finished products, which have been the inspiration and soul of work in all the past, are in more and more fields gone. Those who realize how small a proportion of the young male population train or even engage in amateur sports with zest and regularity, how very few and picked men strive for records, and how immediate and amazing are the results of judicious training, can best understand how far below his possibilities as a motor being the average modern man goes through life, and how far short in this respect he falls from fulfilling nature's design for him. For unnumbered generations primitive man in the nomad age wandered, made perhaps annual migrations, and bore heavy burdens, while we ride relatively unencumbered. He tilled the reluctant soil, digging with rude implements where we use machines of many man-power. In the stone, iron, and bronze age, he shaped stone and metals, and wrought with infinite pains and effort, products that we buy without even knowledge of the processes by which they are made. As hunter he followed game, which, when found, he chased, fought, and overcame in a struggle perhaps desperate, while we shoot it at a distance with little risk or effort. In warfare he fought hand to hand and eye to eye, while we kill "with as much black powder as can be put in a woman's thimble." He caught and domesticated scores of species of wild animals and taught them to serve him; fished with patience and skill that compensated his crude tools, weapons, implements, and tackle; danced to exhaustion in the service of his gods or in memory of his forebears imitating every animal, rehearsing all his own activities in mimic form to the point of exhaustion, while we move through a few figures in closed spaces. He dressed hides, wove baskets which we can not reproduce, and fabrics which we only poorly imitate by machinery, made pottery which set our fashions, played games that invigorated body and soul. His courtship was with feats of prowess and skill, and meant physical effort and endurance.