In this sense, researchers and engineers may both be considered technologists ; the 3 fields are often considered as one for the purposes of research and reference. The precise relations between science and innovation, in particular, have been debated by scientists, historians, and policymakers in the late 20th century, in part because the debate can inform the funding of fundamental and used science.
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An articulation of this viewpoint could be discovered clearly in Vannevar Bush's writing on postwar science policy, Science The Limitless Frontier: "New products, brand-new markets, and more jobs require continuous additions to knowledge of the laws of nature ... This vital brand-new understanding can be obtained only through standard clinical research study." In the late-1960s, however, this view came under direct attack, leading towards efforts to money science for particular jobs (efforts resisted by the clinical community).
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History Paleolithic (2. 5 Ma 10 ka) The usage of tools by early people was partially a procedure of discovery and of development. Early humans evolved from a species of foraging hominids which were currently bipedal, with a brain mass around one third of modern people. Tool usage remained reasonably the same for the majority of early human history.
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Stone tools A campfire, typically used to cook food Hominids began utilizing primitive stone tools countless years earlier. The earliest stone tools were little more than a fractured rock, but approximately 75,000 years earlier, pressure flaking provided a method to make much finer work. Fire The discovery and use of fire, an easy energy source with numerous extensive uses, was a turning point in the technological evolution of humankind.
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Fire, fueled with wood and charcoal, enabled early humans to prepare their food to increase its digestibility, enhancing its nutrient value and broadening the variety of foods that might be eaten. Clothing and shelter Other technological advances made throughout the Paleolithic era were clothing and shelter; the adoption of both technologies can not be dated exactly, but they were an essential to humanity's development.