Alan Turing: the enigma

From a technical aspect the book is great. However, for the side of me that wants a novel to entertain, this was not it. Many chapters had the same enjoyment as the chapter from the Grapes of Wrath about the ants crawling on the turtle. They seemingly added little to the story. Other times the story seemed to drift away from Alan Turning and more to the technology as a whole. Yes, I understand that the reader needs to know what was going on, but the meat of the story sometimes didn't seem to focus on its subject. Overall,I enjoyed it, even if it was a bit long at times.