Martin (1992: 456):
Importantly, macro-News are not simply a replay of macro-Themes; they draw together new meanings which could not have been predicted by macro-Theme because they had not been made.
 This translates as: 'text summaries are not simply a replay of introductory paragraphs'. The field here, still, is writing pedagogy — prescribing how to structure written texts — rather than theorising the system of the English language by examining instances (texts). Moreover, the situation is quite different when an actual text is closely examined.
In text [6:23], the introductory paragraph ('macro-Theme') is given by Martin as:
Wars are costly exercises. They cause death and destruction and put resources to non-productive uses but they also promote industrial and economic change. This benefit does not mean that war is a good thing, but that it sometimes brings useful developments.
and the text summary ('macro-New') is given by Martin as:
… it is clear that future generations not only enjoyed the security and peace won by their forefathers but also the benefits of war-time economic expansion.
It can be seen that, rather than accumulate the New meanings of the preceding co-text (Martin's claim), what actually happens in this particular text summary ('macro-New') is:
- first, content not previously discussed in the text is introduced (it is clear that future generations not only enjoyed the security and peace won by their forefathers), and
- second, one piece of New information from the introductory paragraph (promote industrial and economic change) is reworded (lexical cohesion) and again presented as New information (the benefits of war-time economic expansion).
 The claim here is that new meanings could not have been predicted by the introductory paragraph on account of the fact that these new meanings had not been made. The logic here is as follows:
- Q could not have been predicted from P because Q had not yet happened.
The notion of prediction only applies to events that have not yet happened.