writing a sci-fi with a vague concept.
although I have an idea of how to go about that, I want to know different opinions about how it can be accomplished. and would it work if I do not use any jargon at all?
The name "science fiction" has science in it, but the genre hardly has. Same like no litRPG has actual role playing in it. Remember that science fiction is just another genre of fantasy literature where the magic is called "energy shields", "faster than light travel", "hyperspace", "lasers", ..., mythical beings instead are called "mutants", "genetically engineered" or "aliens" and so on. (Though you might also see insertions of classic non-science-fiction magic (especially telepathy and telekinesis are extremely common) or species (space-elfs, space-dragons, ...)).
And given the nature of magic, no matter whether it is actually called magic or it is called "science-fiction science", the answer to why and how it works is always "because it's magic". You can try to hide that fact with jargon babbling, but that works as badly with "science-fiction science" as it does with any other form of magic and usually only becomes involuntarily funny (Though for some people it works, just look at all those jargon babbling involved with all forms of magic people believe in in the real world).
Unless your story is about some cutting edge engineer or some inventor, there also is the possibility about being realistic how people interact with technology: How many people know how an CD-reader is actually working? How the chips in an computer actually work? How data is transfered over the wire, fiber or air when using the internet? Practically nobody at all. (We might even have already reached the point, where there is no single person that has the whole picture for things like that, but only specialists that know what happen on one or two layers of it). This has never stopped anyone today from using technology, so it is safe to assume people would use their stuff without understanding how it actually works in a science-fiction university, too. (Though some aspect of technology working realistically in a science-fiction story might confuse some people).
april18 Wrote: my protagonist is a scientist, so he's supposed to know his stuff. but for the story, the 'science' is not important, but the 'goal' he wants to accomplice using that is. so, in that case, is jargon necessary?
If you narrate how scientists talk about their science, then you might need some babbling to fill those parts. Though I'd suggest to avoid that, unless really necessary. (And even then there might be the story of "looking over the wall", i.e. talking about the meeting instead of showing the meeting itself).
And even scientists have to talk with non-scientists. Their family, managers/investors, non-technical stuff, ... They will usually learn quite well to not bore them with jargon.
"The quantum spectrum analysis has discovered unusual trace amounts of space-time dilation in the peripheral event horizon."
The console lit up before her. On it, graphs and bright colours swirled around the image of a black hole. She felt the onset of a migraine. None of the readouts made any sense to her. They were too excentric - as if reality had just taken a vacation.
As was said before, Science Fiction has always been part of Fantasy. Even the hardest of fictions at some point need to break the rules of time and space a bit. Hard Sci-Fi will try to invent some concept that could in theory work if the reader accepts a certain premise. Soft Sci-Fi can do just about anything it wants. I'd say you can easily use the genre as window dressing. Maybe just don't make an epic blunder like the Prometheus School of Scientific Conduct and Running Away.