Think about it: A flea jumps 6 feet onto a dog's (or person's) neck.   
   That's like us jumping 5000 feet in the air to a target 4 miles away.   
   The flea's eye is probably too small to create a full image, and she has   
   maybe 10,000 neurons to process things. (5000?)   
      
   I have decided it's doing some kind of "synthetic aperture" processing, though   
   maybe it's simpler. The flea's body is flat, and probably used for aerodynamic   
   steering.   
      
   On top of all that, it may be using IR, since a flea operates in the dark.   
      
   I naturally wonder what kind of detector works at 5-10 microns? There is not a   
   lot of d(kt) energy to flip a molecule...A guided wave set up?   
      
      
   ?   
   JB   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)