How did the evolution of special effects in the 20th century influence storytelling in science fiction films?

Science fiction films have long captivated audiences with imaginative narratives that explore futuristic technologies and otherworldly scenarios. However, the storytelling potential of such films was often constrained by the technological limitations of their time. As special effects advanced throughout the 20th century—transitioning from practical effects and stop-motion to groundbreaking CGI—the way stories could be visually represented changed dramatically. This evolution not only enhanced visual spectacle but allowed filmmakers to more authentically depict complex, abstract ideas and expansive universes, thus reshaping the narrative possibilities and thematic explorations of the genre.