And he thought then about the Guild--the force that had specialized for so long that it had become a parasite, unable to exist independently of the life upon which it fed. They had never dared grasp the sword...and now they could not grasp it. They might have taken Arrakis when they realized the error of specializing on the melange awareness-spectrum narcotic for their navigators. They could have done this, lived their glorious day and died. Instead, they'd existed from moment to moment, hoping the seas in which they swam might produce a new host when the old one died.