But seen from a longer and wider perspective, it appears very superficial indeed. In a nutshell, Stewart's book has considerable breadth, but not enough depth. A particular example will illustrate such superficiality. But this defeats the entire premise of the book, which is that ideas count as intellectual capital iff they earn income. According to the argument that Stewart has made up until this point, the business value of ideas depends NOT on the estimation of knowledge workers, but rather on the spending of customers.
Intelligence is the basis for ALL comparisons, between knowledge holders or whatever.
Regrettably, Stewart excludes intelligence from its rightful place in the hierarchy. These should help encourage a better appreciation for the all of the stakeholders in the marketplace of ideas. Entrepreneurs can only sell ideas once innovators have conceptualized them. And markets for ideas are build on societal resonance. Ideas are part of culture, from which we all receive far more than any of us ever contributes.