Emerson said, "Trust thyself: every heart vibrates to that iron string."   REM said, "What's the frequency, Kenneth?"   Will Kenneth's waves propagate down the line?  If so, would they add to, or cancel out,  the waves of others?  That depends on the frequency, Kenneth!  I guess that's why Michael Stipe took such an impassioned interest  in the question.  Is it even a good thing if one's waves add to those of another?  Might it not become disharmonious, like a runaway washing machine, shaking violently, parts flying through the air in smooth ballistic arcs only to bounce and clatter  in dull discordance.  Does one's iron string even need to come into contact with Kenneth's?   Might not the wave energy  passing through the air stir up a resonance in one's bones?  Questions, such as these, haunt me -- not to mention:  Who, exactly, is Kenneth?