Boots

I went to art school after I finished my science degree. A lot of engineers study art as well.

If you don't feel like saying anything, just smile or wave. Acknowledge their presence at least. An exception would be university professors. Most of them don't talk to students outside of class and don't feel the least bit guilty.

In Mexico most waitresses live off their tips because they have no base wage.

I stopped caring about people a long time ago except for my immediate family.