The way of compared cities with knowledge is new but not clearly clarified in the article I think. The highway is more like extracting knowledge directly from

The way of compared cities with knowledge is new but not clearly clarified in the article I think. The highway is more like extracting knowledge directly from our minds. While the streets are more like wandering from thoughts to thoughts. Extracting knowledge directly is suitable for solving a problem with one answer, but wandering from thoughts to thoughts is more comfortable for creative things.