Why is there such a massive gap between high-quality Sci-Fi literature and those total dud movies?
In my view, the heart of Sci-Fi lies in the core idea and the specific atmosphere built around it—something that feels fresh and original. Also, there aren't actually that many Sci-Fi novels that stick to a classic 'setup-conflict-resolution' structure. One of the best at balancing a wild concept with an actual compelling plot is Philip K. Dick. Personally, I think it’s incredibly difficult to translate a 'pure' Sci-Fi concept into the language of cinema. Honestly, > isn't even the pinnacle of Sci-Fi writing—not within the genre, and maybe not even for Philip K. Dick himself—but it works beautifully on screen when you have a talented director behind it. It’s rare for a great Sci-Fi premise to align perfectly with its cinematic presentation, but when it happens, you get a masterpiece like >. So, the divide really comes down to the sheer effort and the level of talent a director needs to sync up the elements of two different media: the novel and the film.
Regarding >—personally, I don't think Soderbergh even came close (it might be better if he just stayed away from Sci-Fi altogether). And while Tarkovsky definitely captured the essence of the idea, he made a film that's basically unwatchable for a general audience. Then you have someone like Spielberg, who overdid it with formalism and, frankly, went overboard with the sentimentality in both > and >. As for >, that's just a kid's movie.
The only genre mashup that really makes Sci-Fi work for me is horror-action-Sci-Fi, which grabs the best parts of both worlds—think > or >. That horror/action edge provides the necessary thrill, preventing the story from becoming just a long, drawn-out meditation on "what if" scenarios.
There's also this other subgenre I’d call 'weird' Sci-Fi. It isn't really about technology; it's more about mind games, consciousness, drugs, and things like that... similar to >, >, or mostly just > type stories.
> and one more thing—> is >, not Sci-Fi. 😉