" This strategy is exemplified by the sea squirt larva, which swims about until it finds a suitable rock, to which it then permanently affixes itself. Cemented in place, the larva has less need for complex information processing, whence it proceeds to digest part of its own brain (its cerebral ganglion). One can observe the same phenomenon in some academics when they have been granted tenure. "

― Nick Bostrom , Superintelligence: Paths, Dangers, Strategies