Interesting take on the walkway discussion.

I remember reading about a new campus which intentionally did not create walkways at first. They let the travel paths grow dynamically, and eventually built walkways along the naturally chosen paths.

The small post office in my town decided (for some odd reason) that the path people took from the parking lot to the door was verbotten. They even put up a small link fence to force people to walk an 'unnatural' way. After a couple of years, the fence came down.