True, it is not more than anecdotal because no one is really performing causal inference studies on this so that people can draw rigorous conclusions. It is how

True, it is not more than anecdotal because no one is really performing causal inference studies on this so that people can draw rigorous conclusions. It is however quite obvious to anyone who is actually physically present there and in other parts of Chicago, and quite obvious to the business owners who have to deal with the reality of a significant drop in business.