We're not exactly unaccustomed to paranoid political thinking in the pages of our rival weekly here in San Francisco. But the journos at the Bay Guardian have taken their conspiracy theories to new levels -- and depicted them in bolder-than-ever graphics -- in this week's issue.Appearing alongside an article by Guardian reporters Rebecca Bowe and Sarah Phelan about the "media machine behind the assault on progressive ideas" is a spiderweb conspiracy chart that puts John Nash's scribblings in A B