New paper says the death of star scientists often benefits their subfields, via an influx in new contributors and ideas.

http://ecorise.instructure.com/eportfolios/5879/Tren_Tabs_Ncs__AlphaPharma__Oral_Steroids
http://uws-ce.instructure.com/eportfolios/12184/Asthalin_Inhaler_Td_Vs_Eagles__Cipla__Asthma

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A story might contain multiple roads that a writer could explore, but the writer has to choose which is the most interesting or relevant, and focus on that.