The problem with futuristic science fiction is that future tech cannot be explained because we don’t know about it “yet”. Historically, predictions of what the future looks like are almost always wildly incorrect, because there is no way to know what advancements will occur. If we did, it wouldn’t be science fiction, would it? But as Arthur C Clark famously put it, “Any sufficiently advanced technology is indistinguishable from magic”. So science fiction writers just come up with magic, and give it a science-sounding explanation.
I remember one science fiction writer whose books were based on planets where magic worked—so it was kind of confusing that is was called “science fiction”.
The author did not even attempt to give a scientific explanation for anything—they were just “magic planets”.
Lol.
The original Star Trek used many devices we now have today. Computer disk, Bluetooth, smart medical beds, cell phones, hypo needles, etc.