概要：
idescribeapossibleperspectiveonthecurrentstateofloopquantumgravity，atthelightofthedevelopmentsofthelastyears.ipointoutttthattttthattttthate having awell-defined background-independentkinematicsandadynamicsallowingtransitionamplitudestobecomputedexplicitlyindiffered edynamicscanbegivenintermsofasimplevertexfunction，largely determined by locality， diffeomorphisminvarianceandlocallorentzinvariance.iemphasizetheimportanceofapproximations.ilistopenproblems.ro velli