For sure, they are good for associative and analogy searches for well connected points in concept space, but leaf nodes are totally pulled out of the ether. E.

For sure, they are good for associative and analogy searches for well connected points in concept space, but leaf nodes are totally pulled out of the ether. E.g. you can get great translation of source code from one language to another, but without extra effort, a chunk of API methods are going to be total fiction. Or you can search for a good day trip to make when a tourist, and it'll get the major landmarks just fine, but e.g. restaurant recommendations are probably going to be made up.