> Cabello and colleagues show, however, that if an experimenter is free to make spin measurements anywhere in the xz-plane, the heat generated per measurement i

> Cabello and colleagues show, however, that if an experimenter is free to make spin measurements anywhere in the xz-plane, the heat generated per measurement is unbounded—obviously, an unphysical result. First thing that popped into my head was "ultraviolet catastrophe" -- and saw that one of the scitation.org commentors had beaten me to punch.