Roger,I'd like to revisit something I referenced in my original post in passing.
I don't like to be touched.
I have never suffered any sort of trauma or abuse (as far as I can remember, anyway); I just don't like being touched. It freaks me out and makes me extremely uncomfortable. And yet people assume it's just hunky-goddamned-dory to come up and hug me all the time. Hello or goodbye or whatever. It's icky. I really don't like it.
If someone is going to touch me at all in any way I would like to be informed so I can emotionally prepare myself for it.
Again, mine is not the reaction of a trauma survivor. But as an instructor with a modicum of empathy I figure it's worth the accumulated 5 minutes of quiet, private conversations with each student about their personal space to make sure everyone has the best class possible.
I DGAF about some of the criticisms stated here. While I'm not a cave diveryl/instructor, my job of whatever course I teach is how to minimize the stress experienced by my students to maximize the speed and depth of their learning. All within reason defined by me. And each instructor will have a different definition of what is reasonable.
It really is that simple for me.