A couple of years ago, we were coming home from visiting my in-laws in Florida and I sat next to a woman on the plane who found out we were “going home” to SF and wanted to talk my ear off about everything that’s scary there. First of all, I didn’t want to talk to you anyway, lady, I just want to read my book. But since you asked, no, I don’t know what you mean when you are talking about how dangerous it is. I played it as simply confused about what she was talking about, and eventually she got confused at my response and left me alone. I wasn’t going to be successful convincing her; I knew that. But playing it that way was non-confrontational and still seemed to have the desired effect, which was to put a chink in the armor of her misinformed opinions.