On the somewhat pessimistic side are certain philosophers like the Herbert Marcuse and John Zerzan, who imagine that technological societies are inherently flawed a priori. They suggest that the result of such a society is to become evermore technological at the price of freedom and psychological health . Continuing improvements led to the furnace and bellows and supplied the power to smelt and forge native metals . The benefits of copper tools over stone, bone, and wooden instruments were shortly obvious to early humans, and native copper was in all probability used from close to the beginning of Neolithic times (about 8000 B.C.E.). Native copper does not naturally occur in large amounts, however copper ores are fairly common and some of them produce metal easily when burned in wood or charcoal fires.
Tools embrace both simple machines , and extra complex machines . As tools increase in complexity, so does …