From: desmondkavanagh@gmail.com   
      
   On Wednesday, May 27, 2020 at 12:16:27 PM UTC+1, Thomas Koenig wrote:   
   > [F'up]   
   >   
   > Steve Coltrin  schrieb:   
   > > begin  fnord   
   > > ****@******.com (Dorothy J Heydt) writes:   
   > >   
   > >> It has been so long since I read that book that I have to ask:   
   > >>   
   > >> They used swords in _Dune_?   
   > >   
   > > Swords and knives.  There's ubiquitous personal defensive systems that   
   > > are impervious to most projectile weapons and that present quite   
   > > severe disincentives to using energy weapons.   
   >   
   > I always found that part dodgy.  If you have a personal energy   
   > shield that keeps fast objects from going in, why wouldn't everybody   
   > use that, plus medieval knight-type armor?  If you make that out   
   > of any sort of advanced material, you'd be pretty much invulnerable   
   > on a battlefield.   
      
   Frank Herbert wasn't big on science/engineering. Take the stillsuit - supposed   
   to convert sweat which evaporated to cool the body, back into liquid water to   
   drink, with no external power source? Violates both the First and the Second   
   Law of    
   Thermodynamics.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)