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She admired Mr. Barrett 's suits with their well-cut shoulders and sleeves ; he wore them so casually , a mark of good breeding . As if an astronomical observatory should be made without any windows , and the astronomer within should arrange the starry universe solely by pen , ink , and paper , so Mr Gradgrind , in his Observatory ( and there are many like it ) , had no need to cast an eye upon the teeming myriads of human beings around him , but could settle all their destinies on a slate , and wipe out all their tears with one dirty little bit of sponge . According to Fast , A & E has asked him to write a followup , but he has not yet agreed to do so . In studies involving a placebo washout , subjects should be told that at some point during the study all subjects will receive placebo treatment ; investigators but not subjects will know when subjects are receiving placebos for washout purposes , so that during the washout , the study is single-masked . They will seek to develop models of thinking and measurement that would trace an urban history with greater inclusiveness than has been allowed by more traditional methods of analysis , so that the life of the city over time may be seen " in all of its messiness and unpredictability , and at many different levels .