I was in a museum yesterday and was the other side of an exhibit to a family of two boys, maybe 6 and 8 and two older parents/grandparents. The exhibit was a big stone coffin which was roped off, but at a low level and only about 10 inches away. There were small signs that said "do not touch".
One of the boys was running his hands all over the top of the stone, just before we walked away, I said "you're not allowed to touch it". My husband later said I shouldn't have said anything as the father/grandfather was also touching it. WABI?