  We have assessed the implications of the in-cube light propagation effect in
absolute gravimeters, and found it contradictory to existing theoretical and
experimental data. We maintain that the `effect' is a bias of the quadratic
coefficient that appears when the model of the trajectory ignores insensitivity
of the laser interferometer to the constant part of the phase. The experimental
bias obtained by fitting such an inadequate model was found in full agreement
with the theoretical evaluations of the effect.
