Neuromancer and Blade runner both explore the theme of what it means to be human, however, they see it through different lenses. It is like two opposite best friends stating their opinions on something. Blade runner approaches the theme through replicants and artificial intelligence, while Neuromancer takes an artificial intelligence and cyberspace approach.
Blade Runner proposes that the conscious is deeper than what we have made it up to be through the replicants of Roy Batty and Rachael. With both of the characters having an artificial memory, it poses the question to the audience whether they have real world experiences or if their emotions structured. Roy Batt confronts his creator about why his lifespan is so short. This shows the emotional depth within the film. This suggests that humanity is more than biological makeup. It displays Roy Batty’s self-determination and natural human desire to accomplish more in life.
Neuromancer explores the cyberspace approach by extending the reality of human life. Because Case physically operates effortlessly in cyberspace as a disembodied conscience, he is challenged when it comes to realistically operating with his physical body. He cannot experience the freedom he experiences in cyberspace which leads to him ultimately questioning his real identity.
The themes of the two works are similar. The replicants of Blade Runner come to their own sense of humanity and identity. The characters of Neuromancer must deal with their identity, self-awareness and overcome mental challenges because their cyberspace blurs physical existence and virtual realities.
The works are different because Blade Runner questions what it means to be human. Neuromancer focuses on the impact cyberspace could have on a human, like one going as far as questioning his identity. The replicants of Blade Runner struggle with their as well but they gather a sense of self on their own, however, Neuromancer’s character seem to be reliant upon AI for self-discovery.