Topic Sentence 2: Due to the ever changing nature of a language, internal reconstruction, which is a technique of renovating the earlier form of a language even without reference to comparative data, has salient application in approaching the study of language change and "Close comparison of forms within an actual language, or within a reconstructed (and thus by definition hypothetical) language, will reveal many structural characteristics of still earlier stages in that language or language family." (Lock and Peters, 755.
Topic Sentence 3: In Historical Linguistics, internal reconstruction and comparative reconstruction are the two methods mostly used by the scholars and these "methods are not in themselves 'historical': the Comparative Method compares the synchronic states of two or more languages, while Internal Reconstruction is based on synchronic alterations within a single language." (Fox, 99)
Topic Sentence 4: In the historical analysis of the languages, linguistic reconstruction becomes a tool as well as goal of the analysis as "we reconstruct earlier forms of languages not merely to explain historical relationship between present day languages but in order to find out what the earlier languages themselves were actually like." (Fox, 3)
The constantly changing nature of the ...