What is the definition of Expertise Studies?

"Expertise studies" is like when you, the average person, decide to become a certified unicorn whisperer or a professional in predicting the exact moment your cat will purr the loudest. It's all about diving deep into a subject, like the finer points of existential dread or the art of making toast with a side of existential questions, and claiming mastery over it.

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Now, here's an edgy example sentence: "The new expert in existential dread just announced that the only way to escape it is by mastering the art of pretending your cat's purr is a soft, human-friendly vibration."