  Classical objects have been excluded as subjects of the observed quantum
properties, and the related problem of quantum objects nature has been
suspended since the early days of Quantum Theory. Recent experiments show that
the problem could be reasonably revisited. The outlined model indicates new
issues, which could result from following and exploring the canonical idea of
Dirac. Topological defects in solids are considered as an example. The aim is
helping to grasp the underlying pre-theoretical new intuitions, which should
replace the old ones attached to the background of classical physics.
