I agree that it's not a very well written article. But its not non-sequitor, and it doesn't really go on to conclude anything. If this is accurate, all it is

I agree that it's not a very well written article. But its not non-sequitor, and it doesn't really go on to conclude anything. If this is accurate, all it is saying is that intelligent people, who appear to enjoy being alone more, are well suited for life in a busy urban environment where you spend less time interacting wth fiends and family and therefore more intelligent people migrate to urban environments. Again, if this is accurate, this isnt saying cities make people smarter (causation), its saying that smart people are drawn to less interactive environments which happens to be cities. it's the exact definition of correlation. tl;dr: nothing ground breaking here, smart people like to be left alone and alone is now defined as living in urban environments.