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-   -   GURPS Dungeon Fantasy 8: Treasure Tables (https://forums.sjgames.com/showthread.php?t=65252)

Kromm 12-18-2009 03:21 PM

Re: GURPS Dungeon Fantasy 8: Treasure Tables
 
It's a finite number of treasures with conceivably infinite variation in a few of the types. You just have to do what particle physicists do and renormalize. In this case, counting each gem as "1" instead of as "an infinite spectrum of gem values" works just peachy. Events where you get very high values are highly suppressed anyway, just like the obscure physical phenomena that physicists tend to write off; if you only have a 1/11019960576 chance of getting 17 times the value, you can pretty much call that "0" in safety.

Turhan's Bey Company 12-18-2009 03:22 PM

Re: GURPS Dungeon Fantasy 8: Treasure Tables
 
Quote:

Originally Posted by SCAR (Post 900951)
I though DF8 had a finite number of possible treasures.

Practically, yes. Technically, no. The bit that makes treasures potentially infinite is that the table for gem size is open-ended. If you get a jeweled item, it is possible, albeit astronomically unlikely, that you can roll an infinite number of "bigger" results, so the gem in question keeps getting bigger and bigger.

It is assumed that the GM, confronted with a long string of "bigger" results, will exercise judgment and either examine the dice for tampering and say "screw this, it's worth a lot, let's move on."

Collective_Restraint 12-18-2009 03:26 PM

Re: GURPS Dungeon Fantasy 8: Treasure Tables
 
Quote:

Originally Posted by Peter Knutsen (Post 900884)
The huge 4 pages long table causes me acuse rectal pain

If reading a PDF causes you rectal pain, maybe you're not using your computer properly ?

Sorry, I had to say it ;)

Kromm 12-18-2009 03:28 PM

Re: GURPS Dungeon Fantasy 8: Treasure Tables
 
Quote:

Originally Posted by Collective_Restraint (Post 900959)

If reading a PDF causes you rectal pain, maybe you're not using your computer properly ?

That, or you're overanalyzing.

martinl 12-18-2009 03:30 PM

Re: GURPS Dungeon Fantasy 8: Treasure Tables
 
Quote:

Originally Posted by Turhan's Bey Company (Post 900957)
It is assumed that the GM, confronted with a long string of "bigger" results, will exercise judgment and either examine the dice for tampering and say "screw this, it's worth a lot, let's move on."

That said, a gem worth more than the rest of the setting combined is a very interesting plot point.

"Hey PCs! Yoo hoo! See this treasure? Isn't it shiny? I double dog dare you to get a reasonable deal on it.

Anyone capable of paying even 1% of it's value could squash you like a bug and take it.

After you've sold it, the buyer won't want it known they've bought it (for their own security), so there will almost certainly be doubt about the truth of the sale. Certain other folks who might want it will check if you have it 'just to be sure.' Some of them will check in unpleasant ways.

Go on. Find a buyer. I'll be waiting behind my screen, smirking evilly."

martinl 12-18-2009 03:35 PM

Re: GURPS Dungeon Fantasy 8: Treasure Tables
 
Quote:

Originally Posted by SCAR (Post 900951)
Do you mean countably infinite or uncountably infinite? - not that it really helps

Both are countably infinite, IIUC. If one was uncountably infinite, it would be 'bigger,' for values of bigger that require advanced mathematics to define precisely.

SCAR 12-18-2009 03:55 PM

Re: GURPS Dungeon Fantasy 8: Treasure Tables
 
OK, I was really just showing that a simple mathematical argument, without sufficently well defined criteria can be used to prove whatever you really want.
Media statistics are my favourite abuses!

pst 12-18-2009 04:01 PM

Re: GURPS Dungeon Fantasy 8: Treasure Tables
 
Quote:

Originally Posted by SCAR (Post 900941)
Bruno is correct, if you have N items, one of which is Infinity, the sum of all the values is Infinity, and the Average, Infinity/N = Infinity

But that is not the case for two reasons. Even though there's no upper limit no item has an infinite value, and you don't have N items, but an infinity of items.

There is no mystery here, even though it's easy to get things wrong. With a d2 instead of a d6 in "my" game the values increase too fast, so the mean value goes to infinity. (Then you get the "St. Petersburg paradox".)

DouglasCole 12-18-2009 04:44 PM

Re: GURPS Dungeon Fantasy 8: Treasure Tables
 
The minimum possible value of a log-normal distribution is 1/infinity higher than zero.

The maximum value is infinity.

And yet, it's quite possible to get the mode, mean, and median of this distribution, and those values are finite.

In a statistics program called Minitab, I just generated a normal distribution centered around 4 with a sigma of 1. Taking 10^[That number] gives a log normal distribution with an expected median of 10,000. In this case, the minimum was listed as "0," which is really "so small that the computer rounds it to zero," while the maximum is over 210 million.

Hrm. I suppose this means that a truly infinite population for this disty would have a median (10,000) but no average, since in theory you can generate an infinite upper bound, but a finite lower bound. Hrm.

PK 12-18-2009 05:11 PM

Re: GURPS Dungeon Fantasy 8: Treasure Tables
 
Quote:

Originally Posted by martinl (Post 900961)
That said, a gem worth more than the rest of the setting combined is a very interesting plot point.

"Hey PCs! Yoo hoo! See this treasure? Isn't it shiny? I double dog dare you to get a reasonable deal on it.

This actually comes up frequently in Elder Scrolls: Oblivion. By the time you hit level 20, you'll regularly find enchanted rings and armor and such that's worth $3,000 to $16,000. By comparison, the best vendor in the unmodded game has $2,000 in his wallet to offer. If you max out your Mercantile skill, it's possible to get this up to $3,000. Still pretty annoying when you go to sell your Ring of the Iron Fist for 10-20% of its value.

This can work just fine in any game, especially DF. Just decide what the best merchant has in his wallet, and it doesn't matter if the PCs find a $16,000 gemstone. Well, not unless one of them decided to buy Jeweler-25 so he can break it down into smaller ones without ruining anything. :)


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