1, I'm interested.
2, Okay, so you're not counting the 80% first draft as a first draft at all. How complete is the new draft? Regardless of how complete it is or even what draft you're counting it as, write it out anyway. Make completion the first priority, because the entire point of a first draft (or a second first draft, or a third....) is to suck donkey nuts while you hash out what it is your story is saying. After you've gotten what the story says, you can chisel out how it's said. Sometimes it's difficult to think of a problem if it's still in your head, and writing it out is the of the plot and its mechanics. Put anything you're not sure of in [brackets] with some text like FIGURE THIS OUT LATER (for goofy bonus points, if you're typing out the draft and can Ctrl+F the text, put [MOOOOOOOO] or something ridiculous in there so you can find it easier.).
3, Put the story in perspective a bit. Is this for a general audience that likes science fiction, or is this aimed at actual experts on gamma radiation and dystopian settings? Because the average reader is A) not an expert on these things enough to call you out: as you've said, they can't prove it wrong, and in general B) they're coming in with a basic suspension of disbelief because the setting is not real life, only imitating it in certain parts. The reader expects at a basic level, compelling characters and a good plot, and that the setting has internal consistency with itself. If teleporters and fast methods of travel haven't been invented, characters shouldn't cross entire continents within a day even under harsh weather because that's "basically teleporting". Something like that.
The average Star Wars fan didn't (and still doesn't) care enough to pull out their nasally nerd voice about how "actually, parsecs are a unit of distance and not time, so there's no way that the Millenium Falcon could clear the Kessel Run in "12 parsecs" because it's like saying it cleared a mile in two feet", but they were still invested in Obi Wan successfully recruiting Han and how well the Millenium Falcon could fly in the interests of getting Luke from point A to point B. Adding midichlorians in the prequels to justify Anakin's power in the Force made the worldbuilding worse. So just don't say anything blatantly stupid like " " and you're good. Don't overexplain worldbuilding that doesn't matter to the immediate settings and the characters, and you're good.
Or you know, figure out what exactly it is you're prioritizing. Is the science a pivotal character in its own right in the plot, more than the people with the names and going the places and doing the things? Some things need to be in the background where they belong. and even then, they bent the rules a bit to land jokes because "one of the first rules that Matt Groening and [David Cohen] agreed upon for writing Futurama was, “Science shall not outweigh comedy.”". Is, and should, the science outweigh the drama of the story? If it's the science, how willing are you to get into contact with physicists in real time and pick their brain?
Go on~....Wow I'll have to check that one. One part that worries me in my WIP the most is if I've managed to create a realistic "new world order" after a massive crisis.
*kicks the door down*
Did someone describe perfectionism-based procrastination? Which ultimately stems from anxiety/shame/a sense of future humiliation from not being "the best ever at everything"/"perfect", even though human beings are inherently flawed? Is said someone avoiding writing because "you can't do terribly if you don't do anything to begin with"?
At the risk of being facetious (sue me), does said writer's inner critic sound like their mom trying to shame them, or like themselves doing an impression of their mom?
Fixed my problem. Went old-school, ditched the computer and am writing everything in longhand on paper. My wrist and hand are wrecked, but it's worth it to see things actually happening.My writer's meeting is next week and I've got nothing.
Not a single word on paper.
I don't know if it's a time thing, a procrastination thing or I'm just not going to manage it full stop.
I've got the ideas and I've got the framework, but it's filling it in and putting it all together that's stumping me. It shouldn't be this hard, should it?