As it turns out, living in an urban environment causes brain damage.
Scientists have begun to examine how the city affects the brain, and the results are chastening. Just being in an urban environment, they have found, impairs our basic mental processes. After spending a few minutes on a crowded city street, the brain is less able to hold things in memory, and suffers from reduced self-control. … [T] his new research suggests that cities actually dull our thinking, sometimes dramatically so.
Kwame Kilpatrick? Gavin Newsom? Michael Bloomberg? The mass idiocy of protesters from San Francisco to Seattle? It all makes perfect sense now. One has long suspected you had to be brain-damaged to live in a large American city, now there is scientific proof.
And the overwhelming dominance of the Democrat party in urban areas is now thoroughly explained.