Is 9c misplaced? 'Provide information that is useful in and of itself. This includes journalism and creative writing'.<p>The author has already listed knowledge of how to do any of the other mechanisms more efficiently and effectively (9a).<p>In what sense is non-instrumental knowledge a fundamental source of wealth? It might be exchanged for wealth, but it is not a form of wealth itself. It is a different paradigm of activity. The author's use of the adjective 'useful' here is surely a misnomer, too.<p>It's also notable that one of the fundamental forms of wealth accumulation historically - different ways of securing and organising the labour of other humans - is excluded from the list.