“When Columbia announced its plans to build a much-needed new campus in a corner of Harlem called Manhattanville, it saw a gritty neighborhood of auto-repair shops, tenements and small manufacturers that would probably pose little obstacle to its ambitions. Columbia says that the project will advance a vital public interest and help revitalize parts of Upper Manhattan. Yet the university has met remarkable resistance. One man’s urban improvement, it seems, is another man’s urban debacle.”