Directory
Encyclopedia

NodeWorks
                              ENCYCLOPEDIA

Link Checker
Home
Encyclopedia : A : AN : ANA :

Analogy

  

Analogy

An analogy is a comparison between two different things, in order to highlight some form of similarity.

Analogies are often used to explain new or complex concepts by showing the similarity between something familiar and something else.

Analogy types

Linguistics

  • In linguistics, an analogy can be a spoken or textual comparison between two words (or sets of words) to highlight some form of semantical similarity between them. Linguistical analogies can be used to strengthen political and philosophical arguments, even when the semantical similarity is weak or non-existent (if crafted carefully for the audience).
  • An analogy can also be the linguistical process that reduces word forms perceived as irregular by remaking them in the shape of more common forms that are governed by rules. For example, the English verb once had the preterite holp and the past participle holpen. These obsolete forms have been discarded and replaced by helped by the power of analogy. However, irregular forms can sometimes be created by analogy; one example is the American English past tense form of "dive": "dove", formed on analogy with words such as drive-drove.
  • Neologisms can be formed by analogy with existing words. A common example is software, formed by analogy with hardware. Another example is the humorous term underwhelm, formed by analogy with overwhelm.

    Mathematics


    Some types of analogies can have a precise mathematical formulation through the concept of isomorphism..

    Anatomy


    :See also: Analogy (biology)
    In anatomy, two anatomical structures are considered to be analogous when they serve similar functionss but are not evolutionarily related, such as the legs of vertebrates and the legs of insects. Analogous structures are the result of convergent evolution and should be contrasted with homologous structures.

    Law


    In law, analogy is used to resolve issues on which there is no previous authority. A distinction has to be made between analogous reasoning from written law and analogy to precedent case law.

    Analogies from codes and statutes


    In civil law systems, where the preeminent source of law are legal codes and statutes, a lacuna arises when a specific issue is not explicitly dealt with in written law. Judges will try to identify a provision whose purpose applies to the case at hand. That process can reach a high degree of sophistication, as judges sometimes not only look at specific provision to fill lacunae (gaps), but at at several provisions (from which an underlying purpose can be inferred) or at general principles of the law to identify the legislator's value judgement from which the analogy is drawn.

    Analogies from precedent case law


    By contrast, in common law systems, where precedent cases are the primary source of law, analogies to codes and statutes are rare (since those are not seen as a coherent system, but as incursions into the common law). Analogies are thus usually drawn from precedent cases: The judge finds that the facts of another case are similar to the one at hand to an extent that the analogous application of the rule established in the previous case is justified.

    Linguistic example

    The United States-based SAT test formerly included "analogy" questions in the form "A is to B as C is to what?" For example:
    :Hand is to palm as foot is to ____?
    These questions are usually given in the format:
    :HAND : PALM : : FOOT : ____

    External links

    Holyoak, K.J. et. al. (1996). Mental Leaps: Analogy in Creative Thought. Cambridge, Massachusetts, The MIT Press.


    		•
    NodeWorks boosts web surfing!
    Page Returned in 3.420 seconds - HTML Compressed 67.9%

    This article is from Wikipedia. All text is available
    under the terms of the GNU Free Documentation License.
     GNU Free Documentation License
    © 2008 Chamas Enterprises Inc.