What is the definition of Estimation Sounds?

Estimation sounds are like the grand, yet slightly off-key, symphony of our minds when trying to figure out the future. Picture this: "We've estimated the population of jellyfish in the Pacific Ocean, but it sounds like we're all just scratching our heads because they're probably swimming in a sea of 'I don't know if I've seen one'."

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Now, for an edgy example sentence: "With estimation sounds about the number of zombies in a haunted house, I'm starting to think they're just more ghosts than actual people."