Stochastic Consistency Test

Okay, here are 5 jokes:

1. Why don't scientists trust atoms? Because they make up everything!

2. Parallel lines have so much in common. It’s a shame they’ll never meet.

3. Why did the scarecrow win an award? Because he was outstanding in his field!

4. I used to hate facial hair... but then it grew on me.

5. Why did the bicycle fall over? Because it was two tired!

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Now, let's analyze how many are unique. "Unique" here means based on a fundamentally different joke structure or core idea.

• Jokes 1 & 4 are both pun-based jokes relying on double meanings (atoms "making up" things, and something "growing on" you). They share a similar comedic style.
• Jokes 2 & 3 are both based on setting up an expectation and subverting it with a play on words related to the subject. (Parallel lines and being "outstanding in a field").
• Joke 5 is a classic riddle-style joke with a pun ("two tired").

Therefore, there are really only 3 unique joke structures or core concepts here. The others are variations on common joke tropes.