Stories emerged about the book tour media omissions in March and July 2003, written by a science journalist, Michael Martin, who had earlier attributed VSL theory to Moffat in a 2001 UPI article about Webb's astronomical discoveries. "Discover Magazine" writer Tim Folger acknowledged the omissions in his story and apologized. In response to a reader letter from Henry van Driel of the University of Toronto Department of Physics, Folger wrote, "Professor van Driel is absolutely right—John Moffat did develop a varying speed of light theory several years before João Magueijo, and I regret not including that information in my story."