Instruct: Classify a given Amazon review as either positive or negative.
Query: Good effort but flawed

Like most who have read Alan Furst's books I was captivated by his prose and his character development.Where he lost me was having the RAF flying Lancaster bombers in the fall of 1940. No doubt the late Roy Chadwick who developed the Lancaster is turning in his grave as the Lanc's first test flight in January of 1941 and it did not fly operationally until 1942.Furst is often given praise for his research but this blunder is something that should not have happened