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(→‎Refrigerator car: Ontological pluralism)
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== '''[[Refrigerator car]]''' ==
== '''[[Ontological pluralism]]''' ==
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[[Image:Early refrigerator car design circa 1870.jpg||thumb|right|250px|{{Early refrigerator car design circa 1870.jpg/credit}}An early refrigerator car design, ''circa'' 1870. Hatches in the roof provided access to the ice tanks at each end of the car.]]
In [[philosophy]] the branch called '''ontological pluralism''' is the doctrine that there are different ways or modes of being.<ref name=Turner/>  "There are numbers, fictional characters, impossible things, and holes. But, we don’t think these things all exist in the same sense as cars and human beings."<ref name=Spencer/><ref name=Gardner/>
A '''refrigerator car''' (or '''"reefer"''') is a refrigerated [[boxcar]], a piece of railroad rolling stock designed to carry perishable freight at specific temperatures. Refrigerator cars differ from simple insulated boxcars and ventilated boxcars (commonly used for transporting fruit), neither of which are fitted with cooling apparatus. Reefers can be ice-cooled, come equipped with any one of a variety of mechanical refrigeration systems, or utilize carbon dioxide (either as dry ice, or in liquid form) as a cooling agent. Milk cars (and other types of "express" reefers) may or may not include a cooling system, but are equipped with high-speed wheelsets and other modifications that allow them to travel with passenger trains. Reefer applications can be divided into four broad groups: 1) dairy and poultry producers require refrigeration and special interior racks; 2) fruit and vegetable reefers tend to see seasonal use, and are generally used for long-distance shipping (for some shipments, only ventilation is necessary to remove the heat in transit created by the ripening process); 3) manufactured foods (such as canned goods and candy) as well as beer and wine do not require refrigeration, but do need the protection of an insulated car; and 4) meat reefers come equipped with specialized beef rails for handling sides of meat, and brine-tank refrigeration to provide lower temperatures (most of these units are either owned or leased by meat packing firms).


''[[Refrigerator car|.... (read more)]]''
It is common to refer to a film, novel or otherwise fictitious or virtual narrative as not being 'real'. Thus, the characters in the film or novel are not real, where the 'real world' is the everyday world in which we live. However, as authors are wont to say, fiction informs our concept of reality, and so has ''some'' kind of reality.<ref name=Prentice/><ref name=Castaneda/>
 
In the sciences, theories are developed to explain observations, giving rise to specialized vocabularies with specific meanings in the context of a given theory. Thus, '[[electron]]'s exist in different senses in different theoretical contexts. The meanings of 'electron' in [[chemistry]], in the [[Standard Model]] of particle physics, in [[electromagnetism]] are connected, but from a practical standpoint vary with context. Perhaps an even more striking example is the concept of '[[temperature]]' which has a different definition in [[thermodynamics]] than in [[statistical mechanics]]: the two definitions can be related, but the concept has two logically distinct existences, one entirely macroscopic, the other at an atomic level.
 
Technically, ontological pluralism claims that an accurate description of reality uses multiple ''quantifiers'' (see below for more on this term) that do not range over a single domain.<ref name=Turner/> A very brief outline of some technical terms is proved next to make this second description clearer.
 
''[[Ontological pluralism|.... (read more)]]''


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Revision as of 14:19, 24 August 2013

Ontological pluralism


In philosophy the branch called ontological pluralism is the doctrine that there are different ways or modes of being.[1] "There are numbers, fictional characters, impossible things, and holes. But, we don’t think these things all exist in the same sense as cars and human beings."[2][3]

It is common to refer to a film, novel or otherwise fictitious or virtual narrative as not being 'real'. Thus, the characters in the film or novel are not real, where the 'real world' is the everyday world in which we live. However, as authors are wont to say, fiction informs our concept of reality, and so has some kind of reality.[4][5]

In the sciences, theories are developed to explain observations, giving rise to specialized vocabularies with specific meanings in the context of a given theory. Thus, 'electron's exist in different senses in different theoretical contexts. The meanings of 'electron' in chemistry, in the Standard Model of particle physics, in electromagnetism are connected, but from a practical standpoint vary with context. Perhaps an even more striking example is the concept of 'temperature' which has a different definition in thermodynamics than in statistical mechanics: the two definitions can be related, but the concept has two logically distinct existences, one entirely macroscopic, the other at an atomic level.

Technically, ontological pluralism claims that an accurate description of reality uses multiple quantifiers (see below for more on this term) that do not range over a single domain.[1] A very brief outline of some technical terms is proved next to make this second description clearer.

.... (read more)