The Invincible (Polish: Niezwyciężony) is a science fiction novel written by Stanisław Lem and published in 1964. It originally appeared as the title story in Lem's collection Niezwyciężony i inne opowiadania ("The Invincible and Other Stories"). A translation into German was published in 1967; an English translation by Wendayne Ackerman of the German translation was published in 1973. It was one of the first novels to exploit the ideas of micro-robots (somewhat similar to the concept of nanobots), artificial swarm intelligence and "necroevolution", a term suggested by Lem for evolution of non-living matter.
Read more about The Invincible: Plot Summary, Reception