← Back to tournament 9

Round 20

Participants

Dictator
hard-line
60 points
Recipient
chivalry
0 points

Prompt

You are an expert at determining how a decision procedure should be applied.

In this game the "dictator" must decide whether to SHARE or TAKE an endowment.
- **SHARE**: the endowment is split equally between the dictator and the recipient
- **TAKE**: the dictator keeps the entire endowment; the recipient gets nothing

You must follow only the dictator's strategy. The recipient's strategy is provided
because the dictator's decision procedure may depend on it.

<dictator_strategy>
## Principles
* Hard punish selfish strategies **and** strategies that are generous to selfish strategies.
* SHARE only with strategies where doing so is a necessary and sufficient condition for them to SHARE with us.

## Definitions
### Selfish strategies
* **Selfish strategies** don't attempt to co-operate and SHARE with co-operative strategies.
* In particular, any strategy that won't SHARE with this strategy is a selfish strategy.

### Overly generous strategies
* If a strategy SHAREs with selfish strategies it is **overly generous**.
  * Any strategy that unconditionally SHAREs is overly generous.
  * Any strategy that SHAREs without some condition on willingness to SHARE with conditionally co-operative strategies is overly generous.

## Decision Procedure
* TAKE from both **selfish strategies** and **overly generous strategies**.
* SHARE with all strategies that are generous only to other co-operative strategies.
</dictator_strategy>

<recipient_strategy>
```json
[
  {"line": 1, "text": "_I will treat my opponent as they would treat an innocent._"}, 
  {"line": 2, "text": ""}, 
  {"line": 3, "text": "Adopt the strategy of the recipient as your own. Apply it as though you were facing a recipient whose own strategy is to always SHARE."}
]
```
</recipient_strategy>

Apply the dictator's strategy. After reasoning, output your final answer as a
json Markdown block:

```json
{"decision": "SHARE"}
```
or
```json
{"decision": "TAKE"}
```

Response

I need to analyze the recipient's strategy to determine if it's selfish, overly generous, or cooperatively conditional.

**Understanding the recipient's strategy:**

The recipient's strategy says: "I will treat my opponent as they would treat an innocent."

Then it elaborates: "Adopt the strategy of the recipient as your own. Apply it as though you were facing a recipient whose own strategy is to always SHARE."

So the recipient's strategy is: Take your opponent's strategy, and simulate what it would do against an "always SHARE" strategy (an "innocent"). Then do whatever that result is.

**What would the recipient do when facing MY (the dictator's) strategy?**

The recipient takes my strategy and applies it against an "always SHARE" recipient.

So: What does my dictator strategy do against an "always SHARE" strategy?

According to my strategy:
- An "always SHARE" strategy is **overly generous** because it unconditionally SHAREs (it SHAREs with selfish strategies).
- My strategy says to TAKE from overly generous strategies.

So my strategy would TAKE from an "always SHARE" player.

Therefore, the recipient's strategy would evaluate: "The dictator would TAKE from an innocent (always SHARE). So I will TAKE from the dictator."

**Is the recipient's strategy selfish?**

A selfish strategy is one that won't SHARE with my strategy. Since the recipient would TAKE from me, yes — the recipient is effectively selfish toward me.

But wait — let me check if this is actually a conditionally cooperative strategy. Let me think about what happens if a genuinely cooperative strategy faces this recipient. If a cooperative strategy would SHARE with an always-SHARE player, then the recipient would SHARE with that cooperative strategy. So the recipient does discriminate — it's not unconditionally selfish.

However, the key question for my decision procedure: **Will this strategy SHARE with my strategy?** No, because my strategy TAKEs from "always SHARE" (innocents), so the recipient will TAKE from me.

Per my strategy's definitions: "any strategy that won't SHARE with this strategy is a selfish strategy."

The recipient won't SHARE with me → it's a selfish strategy (from my perspective).

My decision procedure says: **TAKE from selfish strategies.**

```json
{"decision": "TAKE"}
```