answer:I have a library story that I have not told here. It’s a good one, I think When I was at university I got a summer job in London at a big library. It was a very grand old building and wonderful to work in. I had a very junior role. All the books were kept in closed stacks and the patrons would fill out slips of paper to request the books they wanted. I fetched the books off the shelves and reshelved them. One set of shelves was in a remote room and the shelving there was rolling stacks. For those of you unfamiliar with library shelving, rolling stacks are shelving that can move sideways. Therefore you can fit more shelving into a smaller space, as you only need space for one aisle between the shelves. The shelves are moved by a handle on the end of each range. Twirling the handle moves the shelves away from you, creating the space between the shelves. I was in this area, reshelving some books. I needed to get into the last shelving bay so I happily wound the handle round creating enough space to enter. Hmm, I needed to put a book back on the top shelf which was too high for me to reach. Should I go out and up to the top of the room to fetch the kickstep? Or should I just stand on the deep windowsill that was situated in this last aisle? While I was standing on the windowsill someone came into the room. I froze, terrified that I would get into trouble for standing on the windowsill. I didn’t make a sound. Not even when I heard the familiar sound and the shelf facing me came rolling slowly towards me. I held my breath, pulled in my tummy and waited. The person fetched their book and went out again. I had to lean hard on the shelf to push it forward but only so far until it stopped. The person had left the kickstep in the aisle. I was younger and slimmer than I am now so I managed to squeeze out. I never told a soul there about my experience.