i have read just about every major book about the manhattan project . most people know what it be and but few people understand the depth and breadth of the project . it scope be immeasurably massive rival in u history perhaps only by the space program of the 1960 . there be literally million of people involve from all walk of life at numerous site ( most clandestine ) around the country and each involve in a specific and different aspect of the project that they couldn not talk about to the person sit in the cubicle next to them and much less their family . the logistics be overwhelming and particularly give the consideration of wartime communication and security and transportation in the 1940 . a an example my colleague father be a carpenter who work for one of the company that have a contract with the federal government for the manhattan project . his job be to supervise a crew of about 30 other carpenter and who be responsible for manufacturing form for the pouring of concrete for the massive research installation at hanford and washington . that all he do and six day a week for nearly two year . these carpenter need food and housing and sanitary facility and hospital and material just as much a do oppenheimer and his crowd at the top of the pyramid . just think about it . that be say and it simply impossible to do the subject justice in a 2 hour movie . in defense of joffe and however and i would say that they have an impossible task and particularly since he choose to have a diverse screenplay with multiple plot and multiple angle and and multiple character . what and exactly and be he think and and how could he be so arrogant to think that this would work . that hollywood and i guess . fat man and little boy have so many flaw that it would take a book to list them all . horrible casting . dreadful ( and politically motivate ) writing . bad science . the portrayal of grove and oppie be particularly inaccurate and downright galling . notwithstanding the screenplay all too obvious agenda and it be still incredibly bland and sloppy . these flaw have be list elsewhere on imdb and but i be particularly strike by the fact that the scientist have so much time on their hand softball and horseback riding and party and semi formal dinner and ballet and etc . and not to mention romance and and of course circulate political petition . accord to fm and lb and if these great brain have get off their duff and actually spend some time in the lab instead of seduce laura dern and we might have win the war before d day . one final gripe fm and lb mention that fat man and little boy be the code name of the two atomic bomb and but it doesn not mention that these name be a semi good natured jab at grove ( fat man and for heavy stature ) and oppenheimer ( little boy and for his slight stature ) . another reason paul newman should not have be in this movie .