8

Even in your world with advanced semi-modern technologies, scientists are baffled. In your world, just like today, genetic modification exists. But even after experimenting and dissecting these creatures, the way they function remains a mystery. Scientists keep trying - and failing. Maybe one day they will finally understand, but for now the special ability ...


8

No tools to build tools. The surviving ships had a limited supply of spare parts and no means to make more. Once the capacitor on the ciruit board of the 3D printer goes bad, that thing is completely useless. Perhaps the engineers realized that, and tried to 3D-print old-fashioned turret lathes and printing presses with the starship workshops. But then ...


5

It would be unbelievable if they had kept their technology after several unplanned and under-equipped diasporas. Advanced technology is not just a bunch of technical lesson plans which can be casually carried along in every ship's computer. It is also the undocumented wisdom of experienced practitioners in hundreds of distinct disciplines. Beyond that, ...


4

The Montgolfier brothers, for their first demonstration, used simple materials To make a public demonstration and to claim its invention the brothers constructed a globe-shaped balloon of sackcloth tightened with three thin layers of paper inside. Sackcloth is made of hessian fabric, which, like paper, wasn't known in those times in the roman empire. ...


3

Your premise already explains it. and those who survived were dispersed on a few dozen smaller ships that scattered themselves throughout this new galaxy, with each eventually finding and settling their own uninhabited new world. The large knowledge databanks, the educational material etc., would have been in the mothership alone, of course. The smaller ...


3

Tesseracts! Eight-cell, C8, octachoron, octahedroid, cubic prism, tetracube, or 4D hypercube. All different names for the same concept, namely traveling through a higher dimension of space. It's like when you take a string, and instead of traveling alongside the two-dimensional length of string, you used your three dimensional powers to touch the ends ...


3

Tardigrades and DNA Absorption Nasty little creatures called Tardigrades with almost a sixth of their dna being foreign - that is, from both animal and bacteria genes. One theory is they "absorbed" these genes while in a type of "suspended animation" (these guys can survive in dead space for a short time). As such, there's a real-world example of a ...


3

The best way to defeat scientific inquiry is with more science. If your creatures are themselves the product of genetic engineering by a long dead genius who took most of his secrets to the grave, then its genetic code could be both encrypted and artfully designed, with subtle interactions between apparently unrelated genes producing unexpected effects. ...


2

If you have exowombs, any society totalitarian enough to have population controls will have no trouble implementing mandatory sterilization. Take sex cells from every citizen as early as possible, probably at puberty. Then have them sterilized. The government then has nearly complete control of reproduction, and should be able to maintain a stable ...


2

Magic As discussed ad nauseum on Worldbuilding, shapeshifting is impossibly energetically expensive, and real-time rewriting of DNA doesn't result in the immediate acquisition of abilities. So if your creature can, by sampling another creature's DNA, gain some of its abilities, that's not based on science. So if the creatures evolved to have a species-...


2

Quantum entanglement is (roughly) when two particles have the same quantum state regardless of the space between. They change instantly and simultaneously. While it is currently impossible to transmit classical information this way, in your world (if you were ok with faster than light communication) you could say someone made a breakthrough and figured out ...


2

The people who survived aren't useful to keeping tech running. In the Hitchhiker's Guide to the Galaxy series, the people who crash landed on earth were not...exactly pioneer material. They were mainly middle management. If the majority of people who went down were ordinary citizens, most would not have any technical expertise, let alone be able to figure ...


1

The problem is going to be to make them lose some technology, but not so much as to prevent them from surviving. Mesolithic people had their own technology that was very effective for small hunter-gatherer populations. They knew how to make tools and hunting weapons using local resources. They knew which parts of which plants were edible, and which could be ...


1

They choose not to use their technology Given that your story starts with humanity's reckless use of technology destroying a planet, I could easily imagine a new colony making a deliberate decision to regress to pre-electric technology levels, or even further. Give it a generation or two for the old education levels to wane and you have your technological ...


1

I feel that the premises of your question are somewhat unrealistic. Firstly, radiation fades very quickly. https://emilms.fema.gov/IS3/FEMA_IS/is03/REM0504050.htm In that source, it says "for every 7-fold increase in time after detonation, there is a 10-fold decrease in the exposure rate." In a few weeks or months after the detonations, survivors will be ...


1

Geomagnetic Storm If the planet where they settle down is in a similar solar system as our planet, then a geomagnetic storm is a way to make them lose all of their electronics in a short time. If you check this article you can learn more about it, but according to it says: A geomagnetic storm on the scale of the solar storm of 1859 today would cause ...


1

I want this technology to only be used for the purpose that it was intended, and avoid some of the other actions that a rich government would indulge in (growing a new army, genetic experimentation on embryos, etc). What limitations should I introduce to accomplish this? The government will not regulate against itself if it doesn't have to. The citizens, in ...


1

Bob Lazar explains gravity distortion systems on (allegedly) a spacecraft he worked on in this youtube video, clipped from Joe Rogan's podcast. Please ignore the debate or opinions about whether he is telling the truth or deranged in any way; the point is that he explains a type of system which would make sense, I think, to the average reader (or listener) ...


1

You may want to consider European Medieval Society was based on a stratified society that in general reinforced the idea of immutable way of life. Change happened slowly, generally in realm of a weapons race but even that took centuries. The average mid-level feudal lord was not that responsive about a means to improve the lives of the serfs, for that was ...


Only top voted, non community-wiki answers of a minimum length are eligible