The Invincible), and strangely ordered societies of more human-like beings in Fiasco and Eden, describing the failure of the first contact. Another key recurring theme is the shortcomings of humans. In His Master's Voice, Lem describes the failure of humanity's intelligence to decipher and truly comprehend an apparent message from space. Two overlapping arcs of short stories, Fables for Robots (Bajki Robotów, translated in the collection Mortal Engines), and The Cyberiad (Cyberiada) provide a commentary on humanity in the form of a series of grotesque, humorous, fairytale-like short stories about a mechanical universe inhabited by robots (who have occasional contact with biological "slimies" and human "palefaces"). Lem also underlines the uncertainties of evolution, including that it might not progress upwards in intelligence. Other writings Śledztwo and Katar are crime novels (the latter without a murderer); Pamiętnik... is a psychological drama inspired by Kafka. Doskonała próżnia and Wielkość urojona are collections of reviews of and introductions to non-existent books. Similarly, Prowokacja purports to review a (non-existing) Holocaust-themed work. Essays Dialogs and Summa Technologiae (1964) are Lem's two most famous philosophical texts. The Summa is notable for being a unique analysis of prospective social, cybernetic, and biological advances; in this work, Lem discusses philosophical implications of technologies that were completely in the realm of science fiction at the time, but are gaining importance today—for instance, virtual reality and nanotechnology. Views in later life Lem's criticism of most science fiction surfaced in literary and philosophical essays Science Fiction and Futurology and interviews. In the 1990s, Lem forswore science fiction and returned to futurological prognostications, most notably those expressed in [Blink of an Eye] . Lem said that since the success of Solidarność, and the collapse of the Soviet empire, he felt his wild dreams about the future could no longer compare with reality. He became increasingly critical of modern technology in his later life, criticizing inventions such as the Internet, which he said "makes it easier to hurt our neighbors." Relationship with American science fiction SFWA Lem was awarded an honorary membership in the Science Fiction Writers of America (SFWA) in 1973. SFWA honorary membership is given to people who do not meet the publishing criteria for joining the regular membership, but who would be welcomed as members had their work appeared in the qualifying English-language publications. Lem never had a high opinion of American science fiction, describing it as ill-thought-out, poorly written,