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On Coordination and the Common Ground
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CommonGround
Anton>>>>Benz
1Introduction
Inthistalkweconsidertheroleofcommongroundforsomecoordinationproblemsindialogue.There,weconcentrateespeciallyonthedifferencebetweenexplicitandimplicitrepresentations.Aprototypicalexampleforacoordinationproblemistheso-calledcoordinatedattackproblem1:(1Twodivisionsofanarmyarecampedontwohilltops.Inthevalleyawaitstheenemy.Itis
clearthatifbothdivisionsattacktheenemysimultaneouslytheywillwinthebattle,whileifonlyonedivisionattacksitwillbedefeated.Asaresult,neithergeneralwillattackunlessheisabsolutelysurethattheotherwillattackwithhim.Inparticular,ageneralwillnotattackifhereceivesnomassage.Thecommandinggeneralofthefirstdivisionwishestocoordinateasimultaneousattack.Thetwoarmieshavetocoordinateajoinedproject—simultaneousattack—withacommongoal—defeatingtheenemy.Thereisaviewonlanguageuse2whichemphasisesespeciallytheroleofjoinedprojectsandtheirrelationtocommongroundandpublicgoals.Inthistalkwewanttoconsidertheroleofcommongroundmoreclosely,especiallyitstwoaspectsascommoninformationwhichisprovidedbygeneralrulesoflanguageinterpretation,andasexplicitlyrepresentedcommonknowledge.
Ifweconsideronlymonologue,thenwecanidentifythecommongroundatacertainpointwith