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In this sense, scientists and engineers might both be considered technologists ; the three fields are frequently thought about as one for the functions of research and referral. The exact relations between science and technology, in specific, have been debated by scientists, historians, and policymakers in the late 20th century, in part because the dispute can inform the financing of fundamental and applied science.
An expression of this viewpoint might be found clearly in Vannevar Bush's writing on postwar science policy, Science The Unlimited Frontier: "New items, new markets, and more tasks need constant additions to understanding of the laws of nature ... This vital new understanding can be obtained just through fundamental clinical research study." In the late-1960s, however, this view came under direct attack, leading towards initiatives to fund science for particular tasks (efforts resisted by the scientific community).
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History Paleolithic (2. 5 Ma 10 ka) Making use of tools by early people was partly a process of discovery and of development. Early people evolved from a species of foraging hominids which were already bipedal, with a brain mass roughly one third of modern-day humans. Tool use stayed relatively the same for the majority of early human history.
Stone tools A campfire, frequently utilized to prepare food Hominids started using primitive stone tools millions of years earlier. The earliest stone tools were little more than a fractured rock, but roughly 75,000 years earlier, pressure flaking offered a method to make much finer work. Fire The discovery and usage of fire, an easy energy source with many extensive usages, was a turning point in the technological development of mankind.
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Fire, sustained with wood and charcoal, permitted early humans to cook their food to increase its digestibility, improving its nutrient worth and expanding the number of foods that could be consumed. Clothes and shelter Other technological advances made during the Paleolithic era were clothing and shelter; the adoption of both innovations can not be dated exactly, but they were a crucial to humanity's progress.