From: daellis94@gmail.com   
      
   Except that a torch drive is not a defined class of engines.  It is an   
   informal term.  You're claiming that something is physically impossible when,   
   aside from looking to demonstrate that such material properties are, in fact,   
   impossible to achieve, you    
   also literally don't know what it is you are saying cannot be done.     
      
   Also, materials are regularly engineered that possess properties far exceeding   
   those of their constituent elements.  Is there probably a limit that we will   
   run into somewhere along the line?  In many cases, probably.  Do we know where   
   the limits of    
   thermal conductivity or other properties must be?  No.  We really don't.     
      
   Again, it IS simply a matter of mind-boggling engineering.  It's not a matter   
   of physical, universal constants.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)