>> Also leptons are 'equal' following the Pauli exclusion principle? > What an excellent example of a non-rigorous statement That is completely uncalled for.

>> Also leptons are 'equal' following the Pauli exclusion principle? > What an excellent example of a non-rigorous statement That is completely uncalled for. The difference between leptons (as a kind of fermion, which obey the P.E.P.) and bosons (which do not) is no more and no less than the different definition of identity/equality in the two cases. Rigorously. http://en.wikipedia.org/wiki/Bose%E2%80%93Einstein_statistics http://en.wikipedia.org/wiki/Bose%E2%80%93Einstein_statistic... http://en.wikipedia.org/wiki/Fermi%E2%80%93Dirac_statistics http://en.wikipedia.org/wiki/Fermi%E2%80%93Dirac_statistics