After properly antisymmetrizing, one obtains the generator of symmetries formula_81 given earlier. Thus, both formula_81 and formula_79 can be said to be the "generators of Lorentz transformations", but with a subtle distinction: the first corresponds to a relabelling of points on the affine frame bundle, which forces a translation along the fiber of the spinor on the spin bundle, while the second corresponds to translations along the fiber of the spin bundle (taken as a movement formula_85 along the frame bundle, as well as a movement formula_115 along the fiber of the spin bundle.) Weinberg provides additional arguments for the physical interpretation of these as total and intrinsic angular momentum.