How far apart are humans from animals--even the "vampire squid from hell"? Playing the scientist/philosopher/provocateur, Vilem Flusser uses this question as a springboard to dive into a literal and a philosophical ocean. "The abyss that separates us" from the vampire squid (or vampire octopus, perhaps, since Vampyroteuthis infernalis inhabits its own phylogenetic order somewhere between the two) "is incomparably smaller than that which separates us from extraterrestrial life, as imagined in science fiction and sought by astrobiologists," Flusser notes at the outset of the...