Mark originally wanted to be a painter and painting to him was like subtracting light as paint is added to a white canvas. Conversely, in lighting, one is adding light to darkness. And this led Mark to understand you can’t talk about light without talking about darkness. Michael discusses with Mark how we have lost much of our understanding of the value of darkness as lights have gotten cheaper and more efficient. Mark formed Speirs Major with Keith Bradshaw which grew out of Speirs and Major Associates. Speirs Major are recognized as being one of the world’s leading lighting design practices, using light and darkness to enhance the experience of the visual environment.