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About how big do I want the late Reptigan republic/empire to be?
Posted: Posted July 15th
Edited July 15th by chiarizio
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My latest idea;
I want the population to be almost 607 billion. (Say 610 billion to avoid unwarranted precision. )
I want around 4095 inhabited planets or celestial bodies. (Say between 4000 and 4100)
I want around 55 of them to have populations between 1 billion and 10 billion;
another 540 or so to have populations between 100 million and 1 billion;
and another 3500 or thereabouts to have populations between about 30 million and about 100 million.

The very populous planets’ populations might be distributed something like this:
1 planet with 10 billion;
2 planets with 9 billion each;
3 planets with 8 billion each;
4 planets with 7 billion each;
5 planets with 6 billion each;
6 planets with 5 billion each;
7 planets with 4 billion each;
8 planets with 3 billion each;
9 planets with 2 billion each;
10 planets with 1 billion each.

(All numbers approximate.)

The medium-population planets could be distributed roughly like this:
10 planets with 1,000 million each (already covered in last row of list above!);
20 planets with 900 million each;
30 planets with 800 million each;
40 planets with 700 million each;
50 planets with 600 million each;
60 planets with 500 million each;
70 planets with 400 million each;
80 planets with 300 million each;
90 planets with 200 million each;
100 planets with 100 million each.

So about as many people would live on medium-pop planets as on big-pop planets; but there’d be about 10 times as many medium-pop planets as big-pop planets.

The “small-population planets” (possibly a double misnomer; maybe they’re not all that small and maybe a lot of them aren’t exactly planets) might be distributed somewhat like the following:
100 planets with 100 million each (already covered in last line of preceding list!);
200 planets with 90 million each;
300 planets with 80 million each;
400 planets with 70 million each;
500 planets with 60 million each;
600 planets with 50 million each;
700 planets with 40 million each;
800 planets with 30 million each.

That’s all very very approximate.

That’s only the human population.

The planets with fewer humans may, or may not, also have large numbers of non-human Reptigan citizens permanently inhabiting them. The non-human population may or may not outnumber the human population.

I also haven’t committed to any “canon” “facts” about any planets with 10 million to 30 million humans.
I imagine a planet, or other habitable object, with fewer than 10 million citizen-inhabitants, may have to settle for indirect representation in Reptigan’s parliament or congress.

Either I’ll have to work it out, or I won’t.

——————————

Perhaps this is all badly-based, and I’ll have to re-work all the stuff in this post .
Does anyone have any criticism or corrections to suggest, or just any questions I need to answer?

I’m imagining the Reptigan federation-or-whatchacallit — the Reptigan Union — will “own” about one-ten-millionth of the habitable planets in the Galaxy.

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Are population densities centrally controlled? Are people shifted, by force or coercion, to move as population demands change? How is emigration comtrolled? Or is there even a need for such controls: is the technological quality of life equivalent across planets? Or are there specialised planets for "off the gridders" and "super-preppers" and "paleo-culturalists"? Or any themed planets in general? A planet specialising in sciences or arts, for example.

Posted July 15th by elemtilas
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The only question you’ve asked that I have an answer for is, that each planet limits it’s own population according to various criteria that might differ from planet to planet. (Or might not!)

A planet with only human inhabitants, with tech so high we can just barely imagine it, that is everywhere as pleasant and liveable as the best places on Earth, might limit its human population to 10 billion.

I should consider your other questions. Thank you for them!


Posted July 15th by chiarizio
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Are population densities centrally controlled?

Planet-by-planet, yes.
There are treaties and “federal” laws which might have an influence.
Probably most of those are planet-specific and/or species-specific.
Most planets will be subject only to those treaties and laws that are all-Union-wide; within those parameters they make and enforce their own rules.

Are people shifted, by force or coercion, to move as population demands change?

I do not foresee nor intend that, at the present time.

How is emigration controlled?

I think you meant “how is immigration controlled?”
Anyway that’s what I’m going to answer.
If a planet is already inhabited when Reptigan (which often means the AIs or the Space Centipedes or the Humans) find it, those inhabitants control how many of whom are invited to settle there. If someone is invited they may not want to go. There may be incentives. There may be reciprocity arrangements. If a planet or species has an arrangement with another planet or species, the Union parliament has to approve it, or at least be informed of it and not disapprove it.
The earliest agreement was between the humans and the space-centipedes. The space-centipedes come from a home planet massing three Earth masses and orbiting a spectral class K star.
So if humans find a habitable but uninhabited planet massing more than 1.5 Earth masses, orbiting in the Goldilocks zone of a K or G or M type star, they give the Space Centipedes right of first refusal there. Ordinarily the Space Centipedes take it and settle it, and pretty soon invite a large minority of humans to settle there as well. Humans living on a Space Centipede planet are by treaty required to keep their numbers in check well enough to satisfy the local Space Centipedes. Early during the settlement and “Terra”forming (not!), the Space Centipedes probably hire many AIs to help out; and most and best AIs are known to come from Human planets.
If the Space Centipedes find a habitable but uninhabited planet massing less than 1.5 Earth masses orbiting in the Goldilocks zone of a G or K or F type star, they’ll grant right of first refusal to the Humans. The Humans will usually accept. As long as most of the work is being done in space and/or in orbit, and the actual planet isn’t very populable yet, the Humans will probably hire a bunch of Space Centipedes to construct stuff, at least until plenty of orbital habitats and offices and laboratories and shit are built. Once Humans are well-established on the planet, they’ll probably invite a bunch of Space Centipedes to settle too; most specifically including the workers who’ve been working on it up til then. Many of the workers won’t take up the invitation, because they’d rather move on to the next lucrative construction project. Many other Space Centipedes will just find that any planet comfortable to Humans is uncomfortable to them. But usually eventually there’ll be a thriving Space Centipede sub-colony there. By treaty, Space Centipedes must not reproduce on, nor immigrate to, a Human planet, faster nor in greater numbers, than the Humans there want.
All of that is probably modified every time a new species enters the Union.

Or is there even a need for such controls: is the technological quality of life equivalent across planets?

No, the quality of life is not equivalent across the planets. Nor is the tech level.
Usually, the less time a planet has been settled, the less tech it has, and the more difficult life there is.
Plus a lot of humans think the 36 most populous planets just have too many people.
Most people who have an opinion figure the ideal Human population for an Earth-like Humans-only planet is about 1.5 billion. The 19 or so least populous of the 55 or so big-pop planets are just about right, they think.
(OTOH some people think 330 million is about right. There are about 150 planets with “medium-low-medium” population they think are just about perfect.)
If a planet is best-suited to some other species, people might not be comfortable living there.
But people migrate for all sorts of reasons. Jobs, education, and room to grow a family, are big ones.
The places where there’s room to grow a family are often lower-tech and less comfortable, though odds are they’re at least as comfortable for humans as for any other species.

Or are there specialised planets for "off the gridders" and "super-preppers" and "paleo-culturalists"?

When a planet’s characteristics are first published and advertised, people of certain sorts may be recruited, or certain groups — often whatever “movements” are en vogue at the time — may band together and decide to migrate together.
Often, as the planet’s population grows, third-and-later-generation descendants of the first settlers, and second-or-later waves of immigrants, may not feel as strongly about the original motives as those first settlers did.
OTOH, sometimes after a settlement has already gotten sizable, it will gain a new reputation as being a good place for a certain kind of person to move to; or, a late new wave or movement of immigrants may collectively decide to move there rather than to a less-inhabited planet.
And sometimes its original character will persist.

Or any themed planets in general? A planet specialising in sciences or arts, for example.

Yes. The people who recruit the original settlers, or the people who band together to settle there, may deliberately hope to make it such; and may succeed, though maybe only for a time, or only eventually.
Or the discovery of certain natural resources may turn a planet’s reputation in a particular direction.
Just as has happened to cities on Earth, and sometimes to neighborhoods, or sometimes to countries or nations or states.
For instance if several Union-wide- famous musicians all come out of one university, that university, and by extension that planet, might become a “Mecca” for musicians, music students, broadcasting and recording companies, etc.
Or if several brilliant scientists all happen to join the faculty of a certain university, and they and their co-workers produce several brilliant discoveries and/or theories, the best and brightest other people interested in those fields might want to migrate there.





Edited July 15th by chiarizio
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That's a big universe!

Just for fun, I made a script that will randomly distribute 610 billion people into 4095 planets, according to your criteria for low/medium/high-population planets and the amount of each one:
https://gtx0.com/projects/reptigan/index.php
If you click "reseed" it'll randomly distribute things a different way. Otherwise it'll distribute things based on the seed you have in your URL.

Posted July 15th by Xhin
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Xhin
Ground's what's around

Thanks! I’ll take a look 👀!

Posted July 15th by chiarizio
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Also, some general questions about your world:

  • Do they have faster-than-light tech? If so, what form does it take? If not, how on earth do they keep their republic from fragmenting into a bunch of pieces?

  • How do the planets live on mostly-alien worlds?

  • How do the aliens live on mostly-human worlds?

  • Posted July 15th by Xhin
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    Xhin
    Ground's what's around

    Also, some general questions about your world:

    Great! Thanks!

    * Do they have faster-than-light tech?

    Yes.

    If so, what form does it take?

    I don’t know. I’m not sure I even understand the question.

    If not, how on earth do they keep their republic from fragmenting into a bunch of pieces?

    Well, of course, it’s not on earth.
    It takes a lot of FTL travel, FTL freight, and FTL telecommunication.
    Even then it’s sometimes accomplished only with a great deal of obstinate optimism, optimistic bullheadedness, blood, sweat, tears, and luck.

    * How do the planets live on mostly-alien worlds?

    You mean, how do the humans live on mostly alien worlds?
    They adjust their bodies and habits and minds as much as they can to acclimate themselves to their homes.
    Second-and-later-generation residents have more and easier success at this.
    They also wear gear (for instance air quality and oxygen and pressure and humidity and temperature masks) and condition their residences’ internal environments to compromise somewhat between whatever’s average there and what “human normal” might be.
    If there are nutrients that don’t normally grow in sufficient supply there, they’ll cultivate them or import them.
    And immigrants usually self-select themselves from among the people who can best tolerate the alien environment.

    * How do the aliens live on mostly-human worlds?

    Same answer.


    Edited July 15th by chiarizio
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    That's a big universe!

    A thousand to a million times smaller population than Isaac Asimov’s Galactic Empire, with its 1e15 to 1e18 people. And still less than the 400e18 people there’d be if each of 40 billion planets had 10 billion people.

    But it’s big enough to be a surprise to me, both in number of people and in number of planets.



    Posted July 15th by chiarizio
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    [What form does FTL travel take?] I don’t know. I’m not sure I even understand the question.


    What kind of speed do you get with it? Like are you making short hops of a few light-years each, or can you go from point A to B instantaneously, or what? A lot of science fiction will use the former, though the actual "speed" varies. Other times, you can go from anywhere to anywhere instantly, but there's an enormous fuel cost associated with it, so it's more practical to make shorter trips. There's all kinds of variations here too -- my world has "Harp Gates" where the fuel use is tied to the duration of the gate, so it makes sense to open gates briefly to far-flung places to send in supplies or colonists, while you'd want to keep gates open to cities you go to often for as long as possible.

    They adjust their bodies and habits and minds as much as they can to acclimate themselves to their homes.


    I meant more, is there conflict between the two? Are humans oppressed on alien worlds or vice-versa? Is there "race" war?


    Posted July 15th by Xhin
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    Xhin
    Ground's what's around

    Although the answer re IMmigration control is interesting, I did actually mean Emigration!

    In other words, consider a resource poor, scavenged-tech world. Rough place to live, no one wants to visit. Those born there can't wait to find an opportunity to get off.

    How does such a world control emigration from the planet, if that's even possible?

    Posted July 15th by elemtilas
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