Following up on Shulamit Reinharz’s piece about “trigger warnings’’ and “safe spaces’’ on campus, let me relate an experience I had at Brandeis not long ago.

I took my 9-year-old grandson to a student production of “Little Shop of Horrors,’’ a delightful musical comedy about a plant that feeds on human blood. After the house lights went down, a voice over the PA system announced that, in accordance with Brandeis University policy, the audience was given a trigger warning that some of the scenes in the play might be discomfiting, and audience members should feel free to leave the auditorium.

I was immediately anxious: Did they change the script to make certain scenes bloody or brutal? Would my grandson be upset? Why didn’t they tell me this when they sold me the tickets?

It turns out the play was unchanged.

The next morning, when my grandson bounded into the kitchen for breakfast, I began to ask him about how he slept, when he shouted out those great lines from the play: “Feed me, Seymour, feed me!’’

I suppose it is comforting to know that my young grandson is more resilient than the average Brandeis undergraduate.

Richard Glantz

Lexington