I gave directions to a prospective room mate on how to get to my house so we could meet. He had a BA and MS in Civil Engineeering. He said he was at that moment at the Student Center on University Street. So I said:
Go straight South from the University on University Street to 1106 S University which is 4 blocks due South of the University. I waited and waited. A couple hours later he called. He was still looking for my place. He had driven to a University Avenue that ran East and West in another town.
That Civil Engineer with a Masters Degree is now designing bridges.