A broader definition of a tool is an entity used to interface between two or more domains that facilitates more effective action of one domain upon the other. The most basic tools are simple machines. For example, a crowbar simply functions as a lever. The further out from the pivot point, the more force is transmitted along the lever. A hammer typically interfaces between the operator's hand and the nail the operator wishes to strike.
A telephone is a communication tool that interfaces between two people engaged in conversation at one level. And between each user and the communication network at another. It is in the domain of media and communications technology that a counterintuitive aspect of our relationships with our tools first began to gain popular recognition. Marshall McLuhan famously said "We shape our tools. And then our tools shape us." McLuhan was referring to the fact that our social practices co-evolve with our use of new tools and the refinements we make to existing tools.
Tools that have evolved for use in particular domains can be given different assignations. For example, tools designed for domestic use are often called utensils.
Observation has confirmed that that Tool-using species, including monkeys, apes, several birds, sea otters, and others. Philosophers originally thought that only humans had the ability to make tools, until zoologists observed birds and monkeys making tools. Now humans' unique relationship to tools is considered to be that we are the only species that uses tools to make other tools.
Most anthropologists believe that the use of tools was an important step in the evolution of mankind. Humans evolved an opposable thumb - useful in holding tools - and increased dramatically in intelligence, which aided in the use of tools.
Protective gear items are not considered tools, because they do not directly help perform work, just protect the worker like ordinary clothing. Personal protective equipment includes such items as gloves, safety glasses, ear defenders and biohazard suits. *
Priya from PA, USA loves Dr. G's (sensation&perception psychologist) equipment. ;)
Evidence of stone tool manufacture and use dates from the start of the Stone Age, though it is possible that earlier tools of less durable material have not survived. Stone tools found in China magnetostratigraphically date back to approximately 1.36 million years ago. The transition from stone to metal tools roughly coincided with the development of agriculture around the 4th millennium BC.
WIPO PUBLISHES PATENT FOR "EAR DEFENDERS FOR FASTENING TO A PROTECTIVE HELMET, IN PARTICULAR FOR FORESTRY WORKERS" (AUSTRIAN INVENTORS)
Jan 22, 2012; GENEVA, Jan. 22 -- Publication No. WO/2012/007475 was published on Jan. 19. Title of the invention: "EAR DEFENDERS FOR FASTENING...
A Defiant Churchill's Incredible Journeys; (1) Gung Ho ... Churchill Wears Ear Defenders for Firing Practice aboard the Warship Renown (2) High Flier. Churchill Tries out the Controls of a Boeing on a Flight to Bermuda
Dec 23, 2007; Byline: Andrew Roberts Churchill Goes To War by Brian Lavery Conway Books [pounds sterling]20[pounds sterling]18 (0845 606 4213)...