Forum Prisoner's Dilemma

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Forum Prisoner's Dilemma

Post by Alex Steiner on Thu Nov 04, 2010 3:10 am

Wikipedia Article

Each prisoner must make a choice, sell out on their partner, or keep quiet? If they sell out on their mate, and their mate stays silent, they go free while the unfortunate optimist gets 10 years or so. If they both betray each other, they both get 5 years. If they both stay silent, they both get a year. Which would you choose?

Here's how I envisioned it:

Players are paired up from round to round, and must PM their decision to the mod (who can also play, as long as they make their decision without seeing their opponent's). Points are awarded, and scores and actions posted. The mod can change, to make it easier to do. Decisions should be unchangable.

The score matrix should be something like this:
Prisoner B Stays SilentPrisoner B Betrays
Prisoner A Stays SilentA Gets 1, B Gets 1A Gets 10, B Gets 0
Prisoner A BetraysA Gets 0, B Gets 10A Gets 5, B Gets 5
Each player accrues jail time, which should be funny tro compare, obviously the player with the least amount of time is winning. We could keep running averages (ie Alex has an average of 4.65 years per round) to allow players to different round totals to be compared.

I think this could be an interesting experiment, and it's easy for new players to join halfway through.

Edit: New idea. Instead of playing round by round, each player writes a set of instructions for their imaginary representative, eg "Sell out if you were sold out last time, otherwise stay silent" or "Do the opposite whatever you've received most in the last 5 rounds". Unfortunately, if we go rotation we can't get strong pairing strategies going, partners who never sell out. It's a thought though, original idea stands.

Name - Total - Average
Alex* - 0 - 0
Lord - 5 - 5
Eggs - 5 - 5
Darth - 10 - 10
* means current mod.

Round 1
Alex defected on Darth
Overlord and Eggs both defected.

Round 2 Alex with Eggs, Darth with Overlord.



Last edited by Alex Steiner on Tue Nov 09, 2010 5:26 am; edited 5 times in total


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Re: Forum Prisoner's Dilemma

Post by Supreme Overlord on Thu Nov 04, 2010 3:18 am

I like the idea of standing orders *cough* Tit-For-Tat *cough*. Interesting idea. I'll play for as long as I'm around.


Never put off until tomorrow what you can avoid doing entirely.

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Re: Forum Prisoner's Dilemma

Post by Alex Steiner on Thu Nov 04, 2010 3:23 am

How can you tit-for-tat if you're playing a different opponent each round?

I suppose you can look at what they did to their last opponent.

Then you have more complex strategies that predict this.

I prefer deciding each round, based on who your opponent is. Bots are boring once you've created them.

Hmmm...blackjack bots next?


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Re: Forum Prisoner's Dilemma

Post by Supreme Overlord on Thu Nov 04, 2010 3:47 am

Tit-For-Tat's an example, not necessarily what I'll always do.
I'll actually always, always cooperate. Wink


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Re: Forum Prisoner's Dilemma

Post by The King of Eggs on Thu Nov 04, 2010 4:25 am

Sure whatever


ذا كنت تستطيع قراءة هذا الخروج ثم يمارس الجنس ، تمزح فقط أخيه الله واحد صحيح.



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Re: Forum Prisoner's Dilemma

Post by Supreme Overlord on Thu Nov 04, 2010 4:27 am

Label PMs more clearly; I have no idea what's going on.


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Re: Forum Prisoner's Dilemma

Post by Alex Steiner on Thu Nov 04, 2010 4:28 am

The game will begin in 24 hours or so. Get in for the first round, join in if you missed it.

If you're playing the mod, place your decision in a spoiler, just in case.


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Re: Forum Prisoner's Dilemma

Post by Darth Skywalkerbacca on Thu Nov 04, 2010 4:30 am

in
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Re: Forum Prisoner's Dilemma

Post by Alex Steiner on Mon Nov 08, 2010 3:52 am

Overlord Vs Eggs

Darth Vs Me

PM your choices to me (optionally to each other, but make sure you don't cheat!)


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Re: Forum Prisoner's Dilemma

Post by Alex Steiner on Mon Nov 08, 2010 12:01 pm

Decisions are in for Darth and I.

I defected, turned Darth in and got away scot free (sucker).

Enjoy your 10 years in jail/gaol/Gail.

Edit: Overlord and Eggs both defected, so 5 years each.


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