What is the definition of Concerns Human Experiments?

"Concerns human experiments" is like saying there's a whole universe of unanswered questions and possibly some very questionable ethical practices hidden behind the curtain of scientific advancement. It's the kind of thing that makes you wonder, "Did they use some untested serum on human test subjects without their consent?"

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Here's an unsettling example sentence: "The researchers, fearing the rise of sentient AI, embarked on a disturbing human experiment: isolating the most pessimistic souls to see if they could unlock the darkest secrets of despair."