Because raising intelligence is difficult and expensive, so they used humans and simply prevented their minds from deteriorating. (which means the adults are more intelligent, because they don't lose as much) As for why humans, there were only three bipedal species available for this, one of which was themselves, (which was illegal at the time, although they removed this law about 550 years later) and sea-mammal (which had legs, but became deydrated too quickly to use anywhere but their natural habitat.) and humans, which were legal, and more practical than the sea-mammals.Junghalli wrote:You might be able to solve that by borrowing the tricks used by radiation-resistant bacteria like Deinococcus radiodurans. That would actually strike me as one of the less ridiculous things being thrown around in here, and it actually might be a rather neat genemod for slave soldiers in and of itself.Simon_Jester wrote:That solves the metabolic problem, at the cost of rendering them sterile.
Thermal neutrons are bad for flowers, kitty cats, developing fetuses, and other living things...
Personally I'm kind of wondering why they used humans for this. If you have the kind of biotech needed to turn a human into something like this you'd think it'd be easier to just take some animal from your own planet and raise its intelligence. It would probably simplify your R&D and logistics too, since even in a panspermia scenario you'd probably have to do a bunch of medical research to be able to work on aliens that you wouldn't have to do for something that shared your biology, and something that shared your biological would probably need fewer special medicines.
As far as their planet, everything there is tiny anyway. They're actually the largest land-mammals on their home planet, and they average 5kg. No reptiles over 20kg, even in the ocean nothing topping 100kg. It was just more practical to work with humans. Special medicine was no issue, simini medical technology is advanced to the point of rediculous. They can cure cancer with an injection, (with no needle) fix a severed spinal coloumn in a single 20-minute surgery, mend broken bones and torn muscle with pills (still takes a few days) and eradicate any disease in a heartbeat. Why would a few different meds be an issue? Why should adapting these things be any difficulty at all? Hell, they seek this stuff out as an excuse to soak up government funding.
On kakara (their 2nd colony system, which had 3 habitable planets in a row, also where the kokome ended up) they had much more to work with. Nearly 2 billion local species, if you include insect life, three local intelligent species, (a sea-mammal, a simian, and a dragon) and a wider range of habitats, everything from desert (almost all of kakara I) to a gigantic supercontinent with scattered islands around the coast (kakara II) to a planet-wide archipelago with scattered swamps and shallow ocean (kakara III), they had everything they wanted to experiment to their heart's content.
However, the local intelligent species were all useless for their expirements. The sea-mammals were hard to work with, and could escape them by just diving to the bottom. The simians were good at hiding in the mountains, and weren't much use either. Finally, the dragons were bigger than the simini vehicles, (by volume, not mass) and were far more likely to be killed than captured, as it takes a military vehicle (more likely several, just to be safe) to combat them. (Not to mention that even if the simini could capture them, they would only find that there is nothing they could do to improve them, somebody more advanced got there first.)