Analysis of information sources in references of the Wikipedia article "Dialectical materialism" in English language version.
The sudden conversion into a change of quality of a change which was apparently merely quantitative had already attracted the attention of the ancients who illustrated in popular examples the contradiction arising from ignorance of this fact; they are familiar under the names of 'the bald' and 'the heap'. These elenchi are, according to Aristotle's explanation, the ways in which one is compelled to say the opposite of what one had previously asserted...