  We analyze the objective meaning of probabilities in the context of the
many-worlds interpretation of Everett. For this purpose we study in details the
weak law of large numbers and the role of typicality and universally negligible
probabilities (through the works of Cournot and Borel). We demonstrate that
Everett's theory doesn't provide any clue for fixing a probability rule and
therefore contradicts irrevocably empirical facts and Born's law.
