I see.  Let's go ahead and restrict everybody's qualification to comment only to their career or profession.  So, if you're not a rocket scientist, then don't comment on space programs.  Not a lawyer?  Keep your nose out of legal cases like TMT, etc.  You're a war veteran?  Then keep you nose out of non-war legislation.  Not a civil engineer?  Don't get involved in zoning and city planning issues.  Not a woman that can get pregnant?  Then shush over abortion issues.