  The difficult issues related to the interpretation of quantum mechanics and,
in particular, the "measurement problem" are revisited using as motivation the
process of generation of structure from quantum fluctuations in inflationary
cosmology. The unessential mathematical complexity of the particular problem is
bypassed, facilitating the discussion of the conceptual issues, by considering,
within the paradigm set up by the cosmological problem, another problem where
symmetry serves as a focal point: a simplified version of Mott's problem.
