They are open to 'artificial star' attacks using lasers and the upper atmosphere. They are currently used in the Keck for example as 'adaptive optics' so they can correct for distortions in the atmosphere. They use a fixed amplitude beam and measure the variations, the opposite tack of using a variable beam could induce non-randomness into the stream. ____________________________________________________________________ Before a larger group can see the virtue of an idea, a smaller group must first understand it. "Stranger Suns" George Zebrowski The Armadillo Group ,::////;::-. James Choate Austin, Tx /:'///// ``::>/|/ ravage@ssz.com www.ssz.com .', |||| `/( e\ 512-451-7087 -====~~mm-'`-```-mm --'- --------------------------------------------------------------------