Additional comments from about a decade ago: <a href="https://news.ycombinator.com/item?id=873125" rel="nofollow">https://news.ycombinator.com/item?id=873125</a>
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.
Wonderful piece by Ron Garret. See also his <i>Wealth-production mechanisms: a followup</i> post:<p><a href="http://blog.rongarret.info/2009/10/wealth-production-mechanisms-followup.html" rel="nofollow">http://blog.rongarret.info/2009/10/wealth-production-mechani...</a>
The book "Personal MBA" by Josh Kaufman also covers this in good detail: <a href="https://personalmba.com/12-standard-forms-of-value/" rel="nofollow">https://personalmba.com/12-standard-forms-of-value/</a>