  It is often claimed that there are three "realist" versions of quantum
mechanics: the de Broglie-Bohm theory or Bohmian mechanics, the spontaneous
collapse theories and the many worlds interpretation.
  We will explain why the two latter proposals suffer from serious defects
coming from their ontology (or lack thereof) and that the many worlds
interpretation is unable to account for the statistics encoded in the Born
rule. The de Broglie-Bohm theory, on the other hand, has no problem of ontology
and accounts naturally for the Born rule.
