 It is natural to extend this analysis from the case of measurements induced by an apparatus to that of ‘spontaneous measurements’ as performed by the environment in the theory of decoherence, thus applying the same strategy to recover both quantum and classical phenomena. The resulting picture is one in which de Broglie–Bohm theory, in cases of decoherence, describes the motion of particles that are trapped inside one of the extremely well localised components selected by the decoherence interaction. Thus, de Broglie–Bohm trajectories will partake of the classical motions on the level defined by decoherence (the width of the components). This use of decoherence would arguably resolve the puzzles discussed, e.g., by Holland (1996) with regard to the possibility of a ‘classical limit’ of de Broglie’s theory. One baffling problem, for instance, is that trajectories with different initial conditions cannot cross in de Broglie–Bohm theory, because the wave guides the particles by way of a first-order equation, while, as is well known, Newton’s equations are second-order and possible trajectories in Newton’s theory do cross. Now, however, the non-interfering components produced by decoherence can indeed cross, and so will the trajectories of particles trapped inside them.