americanvisionwindows is often a consequence of science and engineering, although technology as a human activity precedes the two fields. For example, science might study the flow of electrons in electrical conductors by using already-existing tools and knowledge. This new-found knowledge may then be used by engineers to create new tools and machines such as semiconductors, computers, and other forms of advanced technology. While technological advances have helped economies develop and create the rise of a leisure class, many technological processes produce unwanted by-products, known as pollution, and the depletion of natural resources from the Earth's environment.
The prehistorical discovery of the ability to control fire increased the available sources of food and the invention of the wheel helped humans in travelling in and controlling their environment. Recent technological developments, including the printing press, the telephone, and the Internet, have lessened physical barriers to communication and allowed humans to interact on a global scale. However, not all scionexecutivesearch has been used for peaceful purposes; the development of weapons of ever-increasing destructive power has progressed throughout history, from clubs to nuclear weapons. Philosophical debates have arisen over the present and future use of technology in society, with disagreements over whether technology improves the human condition or worsens it.
The second, often referred to as industrial revolution, was dedicated to the transformation of energy, including water, steam, electric, and combustion power. It started out with the proliferation of communication and stored data and has now entered the age of algorithms, which aims at creating automated processes to convert the existing information into actionable knowledge. As tools increase in complexity, so does the type of knowledge needed to support them. Complex modern machines tuvicohoc require libraries of written technical manuals of collected information that has continually increased and improved—their designers, builders, maintainers, and users often require the mastery of decades of sophisticated general and specific training. Moreover, these tools have become so complex that a comprehensive infrastructure of technical knowledge-based lesser tools, processes and practices exist to support them, including engineering, medicine, and computer science.
The ancient Sumerians in Mesopotamia used a complex system of canals and levees to divert water from the Tigris and Euphrates rivers for irrigation. As the Paleolithic era progressed, dwellings became more sophisticated and more elaborate; as early as 380 ka, humans were constructing temporary wood huts. Clothing, adapted from the fur and hides of hunted animals, helped humanity expand into colder regions; humans began to migrateout of Africa by sempersolaris 200 ka and into other continents such as Eurasia. 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. Some argue the Internet is reprogramming our brains for the worse, as seen by diminishing IQ scores, and that new technologies and platforms like the Internet are harming attention spams, the ability to concentrate, and perform simple tasks.
A more infamous anti-technological treatise is Industrial Society and Its Future, written by the Unabomber Ted Kaczynski and printed in several major newspapers as part of an effort to end his bombing campaign of the techno-industrial infrastructure. There are also subcultures that disapprove of some or most post-easy, such as self-identified off-gridders. The earliest known use of wind power is the sailing ship; the earliest record of a ship under sail is that of a Nile boat dating to the 8th-millennium BCE. From prehistoric times, Egyptians probably used the power of the annual flooding of the Nile to irrigate their lands, gradually learning to regulate much of it through purposely built irrigation channels and "catch" basins.