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Bright is a Ghanaian technology innovator, development activist and social entrepreneur. He is President of the mPedigree Network, a system that empowers consumers in Africa and South Asia to instantly verify with a free text message whether their medicines are safe and not counterfeit.  He believes counterfeit drugs find lucrative markets in places where people have low expectations of Western medicine.  If the drug does not have the desired effect they are much less likely to report it; as it is not considered to be the medicine that is at fault, but themselves.

Philip is senior director of Impressionist and Modern art at Sotheby’s in London. His most recent book, Breakfast at Sotheby’s – An A-Z of the Art World explains how he authenticates a painting and how to spot a fake. He says modern art is the faker’s period of choice, because unlike with Old Masters the aim is no longer simply an accurate rendering of nature; and modern art has a more clear-cut distinction of style, which is more easily imitable.

Winnie is assistant professor of rhetoric at UC Berkeley.  Her book Van Gogh On Demand: China and the Readymade is a study of Dafen village, China, the world's largest production centre for oil-on-canvas painting. She says the painters of Dafen village do not think of the paintings they produce as fakes, or themselves as forgers.  In fact, they can be shown to be artists in their own right.