内容简介
Ahumanbeingisasoft,weakcreature.Itneedsconstantsuppliesofair,water,andfood;ithastospendathirdofitslifeasleep,anditcan'tworkifthetemperatureistoohotortoocold.Butarobotismadeofstrongmetal.Ituseselectricalenergydirectly,neversleeps,andcanworkinanytemperature.Itisstronger,moreefficient-andsometimesmorehumanthanhumanbeings.IsaacAsimovwasoneofthegreatestscience-fictionwriters,andtheseshortstoriesgiveusanunforgettableandterrifyingvisionofthefuture.
作者简介
IsaacAsimovwasaRussian-bornAmericanJewishauthorandprofessorofbiochemistry,ahighlysuccessfulandexceptionallyprolificwriterbestknownforhisworksofsciencefictionandforhispopularscience.MostofAsimov'spopularizedsciencebooksexplainscientificconceptsinahistoricalway,goingasfarbackaspossibletoatimewhenthescienceinquestionwasatitssimpleststage.Heoftenprovidesnationalities,birthdates,anddeathdatesforthescientistshementions,aswellasetymologiesandpronunciationguidesfortechnicalterms.ExamplesincludehisGuidetoScience,thethreevolumesetUnderstandingPhysics,andAsimov'sChronologyofScienceandDiscovery.