i watch this with a dim knowledge of what go on at bletchley in the second world war . i think the film cop well with put the complexity of codebreaking in a viewer friendly way and accurately portray the dynamic of the communication challenge inherent when suit talk to geek . that about the limit of the good thing i can say about the way this film deliver it message . it doesn not seem to be able to decide what the important thing be and it doesn not help you get behind any of the protagonist cause . maybe that be the intent the plot itself be a bit of an enigma but i would have prefer a clear indication of what the protagonist want for themselves . you could tell simply from the formula that he would get together with the dowdy female geek and but there be no clear turning point where he overcome his obsessive devotion to his miss ex . a few good moment and but do little to educate and little to really entertain .