premise: Greg Lazarus is the pen name of South African husband-and-wife writing duo Greg Fried and Lisa Lazarus. Greg Lazarus is the author of the novels "Paradise" and "When in Broad Daylight I Open my Eyes", and the couple have also published the memoir "The Book of Jacob: A Journey into Parenthood".
hypothesis: They are a popuylar writing duo.
reason: There is no evidence they are popular.