In modern usage, most paradigms and regions do not consider topicality to be a stock issue "per se"; instead, it being a procedural one brought up by the negative.
That may have been partly because of its topicality, but it has been criticized as being patronising in its attitude to evacuees and nowhere near the author's best work.
Discourse is not a mere concatenation of utterances: talk is organized in sections through relations between discourse segments, topicality, or other ways.
The topicality arose mainly because it was perceived that the results should be applicable to navigation, that is, to the development of a method for determining geographical longitude at sea.
Topicality, although a stock issue, is universally considered an off-case argument, because it deals directly with the plan text rather than the evidence behind it.