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Gifted scientists from all over the world were testing their ideas with colleagues they rarely see . And though this is a film about women , it would have been nice to hear from the men , who are seen only on the periphery . Defining something as ' best practice ' , for example , serves to impose external authority whilst obscuring its identity : external values are held up as an ideal , but the authors of the text are not seen to be the ones who proposed them . I have never seen it justified .