I am convinced that this idea will eventually become the way of the future.  People are slow in changing old ways and it will take a while to convince many, but the idea of using multiple data sources as described by Kim Iles is gradually catching on. When he first proposed this idea in 1991 there were no followers or formal publications speaking for it at all.  Much later when this idea was presented during the 2003 FIA symposium there were only rather careful and skeptical comments about it in the symposium hallways, but at least some of the participants were receptive to it.  Today some of these participants have advanced to not only accepting this idea but also even adapting it to their own frameworks, seeing the matter as a kind of generalization of their own earlier ideas.  Indeed, it seems that there is no escape from combining information of various data sources because as more and more various data become readily available for public access, and the computer technology excels, the value of combining the information contained in the different data sources can only increase, while the intuitive appeal of the notion that more data should imply more knowledge is so compelling that anyone initially merely accepting it is likely to eventually believe that it is an obvious fact; and therefore, not any more foreign than if it had been an idea of their very own.  In a more informal manner what I'm trying to say is that even researchers who may still resist this idea today are likely in the future to be slapping their own heads saying, "Gosh, how did we ever live without this?", and some perhaps saying: "Gosh, this is a great idea I had!"   And this is precisely why the editors of this journal had invited Kim Iles to finally publish this idea as a formal article in this peer-refereed open-access journal.