▁sequence ▁of ▁printed ▁pages ▁prom otes ▁is ▁valuable ▁not ▁just ▁for ▁the ▁knowledge ▁we ▁ac quire ▁from ▁the ▁author ' s ▁words ▁but ▁for ▁the ▁intellectual ▁v ibr ations ▁those ▁words ▁set ▁off ▁within ▁our ▁own ▁minds . ▁In ▁the ▁quiet ▁spaces ▁opened ▁up ▁by ▁the ▁sust ained , ▁und ist ract ed ▁reading ▁of ▁a ▁book , ▁or ▁by ▁any ▁other ▁act ▁of ▁cont empl ation , ▁for ▁that ▁matter , ▁we ▁make ▁our ▁own ▁associations , ▁draw ▁our ▁own ▁infer ences ▁and ▁analog ies , ▁fost er ▁our ▁own ▁ideas ... ▁If ▁we ▁lose ▁those ▁quiet ▁spaces , ▁or ▁fill ▁them ▁up ▁with ▁" content ," ▁we ▁will ▁sacrifice ▁something ▁important ▁not ▁only ▁in ▁ourselves ▁but ▁in ▁our ▁culture ." ▁ ▁Phys ical ▁and ▁mental ▁health ▁There ▁are ▁several ▁negative ▁effects ▁to ▁social ▁media ▁which ▁receive ▁criticism , ▁for ▁example ▁regarding ▁priv acy ▁issues , ▁information ▁over load ▁and ▁Internet ▁fra ud . ▁Social ▁media ▁can ▁also ▁have ▁negative ▁social ▁effects ▁on ▁users . ▁An gry ▁or ▁emot ional ▁convers ations ▁can ▁lead ▁to ▁real - world ▁interactions ▁outside ▁of ▁the ▁Internet , ▁which ▁can ▁get ▁users ▁into ▁dangerous ▁situations . ▁Some ▁users ▁have ▁experienced ▁thre ats ▁of ▁violence ▁online ▁and ▁have ▁fe ared ▁these ▁thre ats ▁manifest ing ▁themselves ▁off line . ▁At ▁the ▁same ▁time , ▁concerns ▁have ▁been ▁raised ▁about ▁possible ▁links ▁between ▁heavy ▁social ▁media ▁use ▁and ▁de pression , ▁and ▁even ▁the ▁issues ▁of ▁cy ber bul lying , ▁online ▁har ass ment ▁and ▁" t