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== '''[[Economics]]''' ==
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The term '''economics'''  refers both to an intellectual discipline and to a profession.
==Footnotes==
 
The intellectual discipline of economics is an attempt to gain an  understanding of  the processes that govern the production, distribution  and consumption of [[wealth (economics)|wealth]], and to use that understanding to assist in the prediction of the consequences of economic activities. It uses the methodology of [[science]]  and can be considered to be a science insofar as it produces testable propositions (see [[/Tutorials#Economics as a science|economics as a science]]), although some branches of the subject are widely considered to be normative (see [[/Tutorials#Normative economics|normative economics]]). Like other sciences, it is subject to a continuing process of revision.
 
The profession of economics includes academics<ref>For a light-hearted look at the life of an academic economist, see Axel Leijonhufvud's ''Life among the Econs''[http://www.kysq.org/diss/LifeamongtheEcon.pdf]</ref>  who construct, develop and teach economic theory,  and practitioners who use economic theory  to make forecasts or to advise upon political, commercial and regulatory decisions. Its most influential application is to the management of the economy. Mistaken decisions in that context can do more damage than in most others.
 
===The methodology of economics===
The traditional methodology of economics has been  first to formulate a theory, and then to examine how far it provides  operationally useful conclusions. Its pioneers have often adopted an  [[instrumentalism|instrumentalist]] approach:  basing  a theory on arbitrary axioms - such as consistently rational human behaviour - and then advocating its acceptance solely  on the grounds that it had  provided  operationally useful results. That methodology has  proved to be vulnerable to changing conditions, however, and there  has recently been a tendency to move away  from an exclusively axiom-based  approach  towards a greater recognition  of  observed behaviour.  Among the  techniques that have been coming into use for that purpose are those of [[Philosophy of economics#Behavioural economics|behavioural economics]] and [[neuroeconomics]].
 
''[[Economics|.... (read more)]]''
 
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Latest revision as of 10:19, 11 September 2020

The Irvin pin. The eyes have always been red, but there are urban legends about the meanings of other colors.
A pin from another company, possibly Switlik or Standard Parachute. This style is common in catalogs and auctions of military memorabilia.

The Caterpillar Club is an informal association of people who have successfully used a parachute to bail out of a disabled aircraft. After authentication by the parachute maker, applicants receive a membership certificate and a distinctive lapel pin.

History

Before April 28, 1919 there was no way for a pilot to jump out of a plane and then to deploy a parachute. Parachutes were stored in a canister attached to the aircraft, and if the plane was spinning, the parachute could not deploy. Film industry stuntman Leslie Irvin developed a parachute that the pilot could deploy at will from a back pack using a ripcord. He joined the Army Air Corps parachute research team, and in April 1919 he successfully tested his design, though he broke his ankle during the test. Irvin was the first person to make a premeditated free fall jump from an airplane. He went on to form the Irving Airchute Company, which became a large supplier of parachutes. (A clerical error resulted in the addition of the "g" to Irvin and this was left in place until 1970, when the company was unified under the title Irvin Industries Incorporated.) The Irvin brand is now a part of Airborne Systems, a company with operations in Canada, the U.S. and the U.K.[1].

An early brochure [2] of the Irvin Parachute Company credits William O'Connor 24 August 1920 at McCook Field near Dayton, Ohio as the first person to be saved by an Irvin parachute, but this feat was unrecognised. On 20 October 1922 Lieutenant Harold R. Harris, chief of the McCook Field Flying Station, jumped from a disabled Loening W-2A monoplane fighter. Shortly after, two reporters from the Dayton Herald, realising that there would be more jumps in future, suggested that a club should be formed. 'Caterpillar Club' was suggested because the parachute canopy was made of silk, and because caterpillars have to climb out of their cocoons and fly away. Harris became the first member, and from that time forward any person who jumped from a disabled aircraft with a parachute became a member of the Caterpillar Club. Other famous members include General James Doolittle, Charles Lindbergh and (retired) astronaut John Glenn.

In 1922 Leslie Irvin agreed to give a gold pin to every person whose life was saved by one of his parachutes. By 1945 the number of members with the Irvin pins had grown to over 34,000. In addition to the Irvin Air Chute Company and its successors, other parachute manufacturers have also issued caterpillar pins for successful jumps. Irvin/Irving's successor, Airborne Systems Canada, still provides pins to people who made their jump long ago and are just now applying for membership. Another of these is Switlik Parachute Company, which though it no longer makes parachutes, still issues pins.

Footnotes