The scheme is neat but far from scientific. To begin with a small matter, but one that may confuse the layman, the ages overlap. Bronze did not wholly replace stone; neither did iron. The use of chipped flint and polished stone continued into the Iron Age.
“Bronze Age” itself is a misnomer and a phantasm. While “Stone Age” and “Iron Age” do define important culture periods—though not the only periods of man’s early activity—the Bronze Age, says T. A. Rickard, “represents a minor phase in the use of copper.”[5] This alloy is merely an incident in the much longer history of the first metal used by man. At the start copper seemed to him to be merely a soft stone. He beat it into ornaments. When he began to melt and cast the native metal instead of pounding it, he took the first step in the true use of metals; but when he smelted copper ore—turning a hard rock into a soft metal—he made himself the master of metallurgy. Bronze—at first an accidental mixing of copper and tin—was merely an episode along the way. “The superiority of copper or bronze over flint and stone tools is, I think,” says Gordon Childe, “generally overestimated. Not only for tilling the land but also for the execution of monumental carvings and even for shaving, the Egyptians of the Old Kingdom were apparently content with stone.”[6]
The Bronze Age was very limited in area. Because of the rarity of tin, the primitive use of the alloy was confined to southern Europe, Asia Minor, and the Inca empire. Most of the world used iron before bronze. Furthermore, the Bronze Age is as delimited in time as it is in space. The earliest bronze in the Danube region is dated about 2300 B.C., and the earliest iron about 1350 B.C., at Gerar in Judea. “Thus,” said Rickard, “the so-called Bronze Age shrinks, at most, to a mere millennium ... the merest fraction of human existence.”[7]
The Iron Age is not so significant as it sounds. It was many centuries after the first use of iron and bronze that either played a really important part in the economic life of man. Like the domesticated horse, the trained elephant, and the wheeled vehicle, bronze and iron were first used chiefly in the making of war.
There is another serious weakness in the Stone Age, Bronze Age, Iron Age sequence. It takes no account of the probability that man used wood, bone, and shell before he used stone. The ape swings a stick much as the first man must have done. The carcass of some bison or stag, picked clean by vultures, must have seemed to our earliest ancestors “a whole potential tool-shop”—as George R. Stewart writes in _Man: An Autobiography_—“thigh bones ready-made for clubs, horns or antlers for awls, shoulder-blades for scrapers.”[8] As early as 1864, a British student of anthropology, John Crawfurd, stood out against Thomsen’s Stone Age as the beginning of culture. At a meeting of the Ethnological Society, he said: “On man’s first appearance, the most obvious materials would consist of wood and bone.... This would constitute the wood and bone age, of which, from the perishable nature of the materials, we, of course, possess but slender records.”[9] Because the discovery of the stone artifacts of early man in Europe was then creating a scientific furore, Crawfurd’s sane observations went unnoticed. Today we have part of a wooden spear made, perhaps, far back in the Great Ice Age (see illustration, page 74).