Do dynamical reduction models imply that arithmetic does not apply to   ordinary macroscopic objects?
  We analyze a recent paper in which an alleged devastating criticism to the so called GRW proposal to account for the objectification of the properties of macroscopic systems has been presented and we show that the author has not taken into account the precise implications of the GRW theory. This fact makes his conclusions basically wrong. We also perform a survey of measurement theory aimed to better focus the physical and the conceptual aspects of the so-called macro-objectification problem. 
GianCarlo Ghirardi, Angelo Bassi