A man and his dog were walking on the beach when they came upon another visitor to the beach. The owner of the dog was proud of his dog’s newly mastered feat, so he said to the visitor, "Watch this!" whereupon he tossed a piece of driftwood far out into the sea and the dog immediately ran on top of the ocean, fetched the wood, and ran back.
The visitor just shook his head in disbelief. Happily, the owner repeated the procedure twice.
Finally he asked the visitor, "Did you notice anything
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