Maybe it’s just me, but when I’m at a doctor’s office, dentist’s office, or any kind of office I tend to look around and make observations. Especially if I’m just sitting in the office, waiting. I’m old enough to remember going to the dentist, as a kid in the 1960’s, when the dentist worked on your teeth, or the hygienist as in today’s comic worked, that the spit bowl, or cuspidor as it’s known, was always a presence. The water constantly swirling and swirling. I don’t exactly know when dentists stopped using them. I’m thinking the dentist I’ve been going to, since I moved back to this area in 2018 has never had the spit bowl, but it’s my guess that perhaps it’s just another thing that was normal tools in a profession. that has disappeared.