"Oh, certainly.  Even Allie knows it.  And a percentage of astrologers are clumsy frauds.  Nevertheless Allie practices it even more assiduously than she used to, when she did it for the public - using Martian arithmetic now and Martian astronomy - much fuller than ours.  But it's her device for grokking, It could be gazing into a pool of water, or a crystal ball, or examining the entrails of a chicken.  The means she uses to get into the mood do not matter and Mike has advised her to go on using the symbols she is used to.  The point is: she has the Sight."