XPost: alt.fan.tolkien, rec.arts.books.tolkien, alt.books.cs-lewis   
   From: derek@pointerstop.ca   
      
   Öjevind Lång wrote:   
      
   > LOL. Of course, science fiction films and serials are bung full of   
   > pseudo-science and things which may not be impossible as such but simply   
   > don't make any sense. To take one example, still from "Star Wars", one   
   > could of course construct robots that walk on legs instead of rolling on   
   > wheels; it is just very hard to understand why anyone would do anything so   
   > impractical.   
      
   Really?  Then why hasn't any significant land-based lifeform evolved wheels?   
      
   Legs are far more practical than wheels unless you can guarantee good roads   
   and ramps.  Not a good idea for a fighting robot (though they had anti-   
   gravity devices, so the robots shouldn't need either).   
      
   In my experience, robot designers start with plans for legged devices - and   
   then use wheels when they decide they're just too hard.   
   --   
   derek   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)