Vivid is a light festival that takes over Sydney at this time of year. The crowds of people flocking to see the light installations around the CBD and the harbour are huge. There is a genuine buzz as people gaze at buildings entranced by the moving theatre of flashing lights and colour. Cameras and iphones are pointed at all the attractions and the memories are locked into the vaults of social media around the world. The fact that there are so many people walking around after dark demonstrates the value of an event bringing a community together.