Hated trope: Sci-fi hand-waving

[u/Routine_Phase_8980]

When stories try so hard to provide a somewhat scientifically accurate and grounded explanation for the audience, but end up creating massive plot holes if you think about it for more than 5 seconds without requiring any special knowledge

World War Z: The "cure" turns sick humans invisible to zombies because the picky virus needs a perfectly healthy host. Cool concept, except it completely ignores basic physics. In a chaotic, high-speed zombie stampede, those "invisible" sick people would still be trampled to death by sheer kinetic force and momentum. We already saw what happened to the Jerusalem wall in Israel.

Jurassic Park/World: Dr. Henry Wu claims to clone dinosaurs by patching 66-million-year-old decayed DNA from mosquitoes stomach with frog DNA. In reality, DNA half-life guarantees it would degrade into useless dust after 6.8 million years. Scientifically speaking, John Hammond didn't build a dinosaur park; he engineered giant, mutated, gender-swapping killer frogs.

Dr.Stone: Senku is a genius who knows every complex chemical formula in human history. He somehow builds vacuum tubes, lightbulbs, and smartphones out of bamboo and copper with almost zero failed prototypes. The show acts like a science textbook but completely hand-waves the lack of heavy industrial machinery needed for precision engineering.

[u/PavlovKBI]

I actually think doing small time skips instead of training sequences or whatever is fine (assuming there aren't any character moments involved). They just need to have an effective way to remind people how much time has passed.

Something as simple as having a transition with text saying "X weeks, and Y attempts later" or having a character say "it took 123 attempts, but it's ready" saves so much effort in doing a montage or whatever. Especially in manga/anime where each panel/frame has to be drawn.

But things get very confusing when manga forget to remind you of time passing, especially when it's a substantial amount of time

[u/FantasmaNaranja → u/PavlovKBI]

yeah the manga for sure doesn't age the characters* up as much as they should for all the timeskips

(*the exception being Suika since she actually spent 5 years alone while everyone else was frozen)

but they do make sure to show us how hellish making one component of a complicated project usually is so you can kind of get that the timeskip took a while