"How can they not know that?" "I'm surprised you don't know about ___". I'm sure we've all had experiences like that. After a while I stopped getting surprised.

* San Francisco bus stop. A couple of young women were talking about religion. One a Catholic from Austria, the other a presumed Muslim from Egypt. Between the two of them, they were unsure if Jesus came chronologically before or after Mohammed.

( That was longer than I thought. So, cut. )