I know this makes me sound like an old lady, but lately I’ve been realizing how many things have fundamentally changed over my 50-odd years on this earth. Although I truly think my interest is not nostalgia but history.  Case in point. I went to the dentist last week. I sat in that chair as the hygienist cleaned my teeth, spraying water in my mouth then vacuuming it out again. And I … [Read more...]