 …the space-time interpretation and the neo-Lorentzian interpretation provide constructive theory explanations. In the space-time interpretation, the model is Minkowski space-time and length contraction is explained by showing that two observers who are in relative motion to one another and therefore use different sets of space-time axes disagree about which cross section of the “world-tube” of a physical system give the length of the system. In the neo-Lorentzian interpretation, length contraction is explained by a combination of dynamical effects of measurement. (2003: 331)