"The Rosie Effect" is a novel by Graeme Simsion that serves as a sequel to the popular book, The Rosie Project. The story follows the life of Don Tillman, a genetics professor, as he navigates the challenges of impending fatherhood with his wife, Rosie. In this light-hearted narrative, Don's unique approach to problem-solving and his social awkwardness lead to humorous situations. As he prepares for the arrival of their child, he faces unexpected obstacles that test his relationships and parenting skills, ultimately highlighting the importance of love and adaptability in family life.