Originally posted by daryen:
I have a question for the group here.
Let's assume I have good data (or good enough data) for a sector. Now I want to "back-date" it by 119 years. (Or, for that matter, how about moving it forward by 119 years?)
What would be a good process?
What should be the percentage chance its TL would change? Its population? Its government/LL?
Has anyone else already tried to go through this, or am I on my own here?
I've been doing something like that, on and off, with the Spinward Marches for going on ten years now. It's a lot of work. I have worked out some tables for generating historical events and use them to get a feel for each world in turn (note that I'm very far from having done that for all 400-odd worlds in the Marches).
Population changes can be interpolated if you have the population figure for two different dates.
Here are a few examples taken from my notes about some of the Sword Worlds:
Hrunting:
Population growth suggestion (17%/century):
55: 6,000,000
125: 6,700,000
200: 7,500,000
300: 8,800,000
400: 10,000,000
500: 12,000,000
600: 14,000,000
700: 16,000,000
800: 19,000,000
900: 22,000,000
1000: 26,000,000
1100: 30,000,000
1200: 35,000,000
Alternative is more growth at first and Near Zero Growth for many centuries.
Tizon:
Population growth suggestion (40%/century (3.3%/decade)):
55: 5,800,000
125: 12,000,000
200: 15,000,000
300: 22,000,000
400: 30,000,000
500: 42,000,000
600: 59,000,000
700: 83,000,000
800: 116,000,000
900: 162,000,000
1000: 227,000,000
1100: 318,000,000
1200: 444,000,000
Narsil:
Population growth suggestion:
97%/century (7%/decade)
55: 6,000,000
125: 27,000,000
200: 54,000,000
300: 105,000,000
400: 207,000,000
500: 407,000,000
600: 800,000,000
700: 1,600,000,000
800: 3,100,000,000
900: 6,100,000,000
1000: 12,000,000,000
1100: 23,600,000,000
1120: 27,000,000,000 (Drops to 3%/decade)
1200: 35,000,000,000
Colada:
Population growth suggestion:
About 15%/century after 500.
-396: 2,000
-298: 18,000
-105: 290,000
-5: 1,100,000
55: 6,400,000
125: 24,000,000
200: 98,000,000
300: 1,000,000 (est.)
400: 1,000,000 (est.)
500: 1,000,000 (est.)
600: 1,100,000
700: 1,300,000
800: 1,500,000
900: 1,750,000
1000: 2,000,000
1080: 2,166,000
1100: 2,236,000 (growth increased to 3%/decade)
1110: 2,303,000
1120: 2,372,000 (growth increased to 6%/decade)
1200: 3,780,000
As you can see, each world requires individual interpretation (IMO, anyway).
As for government changes, I give each world a stability rating from 1 to 5, usually between 2 and 4 (A Vargr population might get a 1 and a Vilani population a 5, small populations tend to lower stability than large populations, that sort of thing). I then roll that number of dice to see how many decades a new world order at least lasts. I then roll one die. I the result is greater than the stability rating, I roll a new government (and law level, based on the new government). If I roll equal to or below the stability rating, the present world order survives (though I usually impose some minor change, like a change of dynasty or a move of the seat of government).
Hans