Is Ignorance Bliss?

A funny thing happened to me at work today. I received a call from a lady trying to submit an online work order. She was complaining that her password didn't work. She said when she typed her password little dots showed up where her password was. I know I was wrong for this, but I could hardly contain my laughter on the phone when I had to explain to her that that was to keep people from looking over her shoulder to steal her password. Sometimes I talk to my mother about some of my experiences at work, and I"m always reminded of the fact that not everyone's into this computer thing. But SHE has been on the computer since I've interacted with her, so I would have expected her to know better.