I heard a fascinating story about human behaviour today. A tour guide at a historic castle was getting very high ratings from tourists. They went to see what he was doing differently. On several of the rooms he had used the red velvet ropes to block the doors. These were normally used when the rooms were being repaired or cleaned. He had put them up at the beginning of each day. During g the tour he would look around and say to the group “would you like to have a quick look in here?” And they would say yes in hushed tones. He would ceremoniously unclip the rope and let them through into the room. A room that was always a normal part of every tour. This simple little bit of theatre made people love the tour that much more. Humans love what we can’t have.