Thatthesedemandshaveemergedinthespanofonlyafewyearsatteststowhatwecallthe‘closings’ofcyberspace.ThesedemandsandtheirclosingsareeffectsofthewayinwhichactingthroughtheInternethasresignifiedquestionsofvelocity,extensity,anonymity,andtraceability.Velocitycallsforregularandongoingvigilanceaboutrapidlychangingtechnologies,protocols,practices,platforms,andrulesaboutbeingdigital;extensitycallsforawarenessofwhereandtowhomdigitalactionsreach;anonymitycallsforlimitingandprotectingexposureandbeingcautiousaboutthepresumedidentitiesofothers;andtraceabilitycallsformanaginghowactionsaretracked,analysed,manipulated,andsortedbyunknownothersandforunknowablepurposes.Allofthesedemandsspringnotfromparticipating,connecting,andsharingalonebuttherelationsbetweenandamongbodiesactingthroughtheInternet,whichismadeupofconventionsconfiguredbytheactionsofdispersedanddistributedauthorities.Itistotheseconfiguringactions,whichwecalltheclosingsofcyberspace,thatweturntointhenextchapter,withafocusonfiltering,tracking,andnormalizing.