Are Cities and the Internet Complements or Substitutes?

Glaeser has argued that they are complements while this NY Times Piece suggests they are substitutes.

Dear Diary:

METROPOLITAN DIARY

More Reader Tales From the City 

While sitting on a bench in Central Park on a recent Sunday afternoon, I started to experiment with my new iPhone. I was interested in Siri, the feature that allows you to ask a verbal question and get a response from the phone. To see if its answer would be correct, I would ask it something I knew.

I placed the phone to my ear and said, “Where is Zabar’s?”

Before the phone could respond, a woman on the other end of the bench told me Zabar’s is on Broadway and 80th Street.

Edward G. Miller