The invention of polished stone axes was a major advance because it allowed forest clearance on a large scale to create farms. Additionally, children could contribute labor to the raising of crops more readily than they could to the hunter-gatherer lifestyle. Human ancestors have been using stone and other tools since long before the emergence of Homo sapiens approximately 200,000 years ago.
Continuing improvements led to the furnace and bellows and provided the ability to smelt and forge native metals . The advantages of copper tools over stone, bone, and wooden tools were quickly apparent to early humans, and native copper was probably canhoduchoa used from near the beginning of Neolithic times (about 8000 B.C.E.). Native copper does not naturally occur in large amounts, but copper ores are quite common and some of them produce metal easily when burned in wood or charcoal fires.
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Discover the advantages of a fully integrated, flexible, intelligent platform. In the old best-of-breed generation, the enterprise would select each component based canhoduchoa on its features and functions. They would then design and build integrations between the components to maintain each of those interfaces whenever a change was made.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'technology.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Optimistic assumptions are made by proponents of ideologies such as transhumanism and singularitarianism, which view technological development as generally having beneficial effects for the society and the human condition. Some critics see these ideologies as examples of scientism and techno-utopianism and fear the notion of human enhancement and technological singularity which they support.
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Historians of science have paid attention to many things which scale , although it is telling that we do not have a word for the general category, suggesting that there is an opening for more general and deeper analysis. Likewise, historians of technology have gravitated to descriptions of scale – think for example of accounts of global systems, or the Tensions of Europe project , or studies of nanotechnology – without explicitly and comparatively examining a key term. Technologies, especially scientific instruments, simultaneously invoke and substantiate scales.
The late-19th and early-20th centuries saw a revolution in transportation with the invention of the airplane and automobile. Hominids started using primitive stone tools millions thewincity of years ago. The earliest stone tools were little more than a fractured rock, but approximately 75,000 years ago, pressure flaking provided a way to make much finer work.
For description of the materials that are both the object and means of manipulating the environment, see elastomers; industrial ceramics; industrial glass; metallurgy; mineral deposit; mineral processing; mining; plastic. For the generation of energy, see energy conversion; coal mining; coal utilization; petroleum production; petroleum refining. For the techniques of construction technology, see bridge; building construction; canals and inland waterways; dam; harbours and sea works; lighthouse; roads and highways; tunnels and underground excavations; environmental works. For the manufacture and design of the means of transportation, see aerospace industry; automotive industry; ship construction.