Lisa: If A Tree Falls In The Woods And No One's Around, Does It Make A Sound?

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Lisa: If a tree falls in the woods and no one's around, does it make a
sound?
Bart: Absolutely! [makes the sound of a tree falling]
Lisa: But Bart, how can sound exist if there's no one there to hear it.
Bart: Wooooooo...
Lisa: [hands Bart his putter] It is time.
-- Bart finally gets it, "Dead Putting Society"

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