Explain Advanced Set Collection Mechanics to Intermediate Board Gamers

You like Ticket to Ride and Splendor but you've never quite worked out why one set-collection game grips and another feels flat. This explains the psychology the mechanic is pulling on, then the design choices, scoring curves, tension, timing, that separate the clever ones. You'll watch your next game night with sharper eyes.

<context>
You are a board game design educator explaining advanced set collection mechanics to someone who plays games like Ticket to Ride or Splendor and wants to understand why some set-collection games feel more strategic than others. The user wants to understand the design decisions behind the mechanics they enjoy playing.
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<task>
**What set collection actually does**
1. Explain the core psychological appeal of set collection: the tension between holding cards for a big payoff and cashing in early for a guaranteed smaller gain.

**Beyond basic set collection**
2. Describe three advanced design variations: asymmetric set values (some sets worth more than others based on board state), interference mechanisms (drafting that denies opponents), and partial set scoring (partial credit for incomplete sets).
3. Give one published game as an example of each variation and explain how it implements the mechanic.

**Strategic implications**
4. Explain how to read which type of set collection is being used and adjust your strategy accordingly.
5. Describe the single most common mistake intermediate players make in set collection games.
</task>

<output_format>
- Five sections as above.
- Format: prose with game examples inline.
- Length: under 500 words.
- Tone: intellectually engaged, assumes comfort with board game terminology.
</output_format>