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The gamma ray burst apparent average isotropic power versus their red-shiftof all known GRB (Sept.2009) is reported. It calls for an unrealistic Gamma RayBurst Evolution around us or it just probe the need of a very thin gammaprecession-jet model. These precessing and spinning jet are originated byInverse Compton and-or Synchrotron Radiation at pulsars or micro-quasarssources, by ultra-relativistic electrons. These Jets are most powerful atSupernova birth, blazing, once on axis, to us and flashing GRB detector. Thetrembling of the thin jet (spinning, precessing, bent by magnetic fields)explains naturally the observed erratic multi-explosive structure of differentGRBs and its rare re-brightening. The jets are precessing (by binary companionor inner disk asymmetry) and decaying by power law on time scales to a fewhours. GRB blazing occurs inside the observer cone of view only a secondsduration times; because relativistic synchrotron (or IC) laws the jet angle isthinner in gamma but wider in X band. Its apparent brightening is so wellcorrelated with its hardness (The Amati correlation). This explain the widerand longer X GRB afterglow duration and the (not so much) rare presence ofX-ray precursors well before the apparent main GRB explosion. The jet leptonmaybe originated by an inner primary hadron core (as well as pions and muonssecondary Jets). The EGRET, AGILE and Fermi few hardest and late GeV gammamight be PeV neutron beta decay in flight observed in-axis under a relativisticshrinkage.

An apparent GRBs evolution around us or a sampling of thin GRB beaming jets?