What is the definition of Selling Human Experiments?

"Selling human experiments" is like a twisted version of the 'green card' dream, but instead of getting to live in another country, you're offered a chance to sell your own sanity for some questionable research. It's the ultimate play-by-mail job, but with brain scans and self-reported stress levels instead of mail order.

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Here's an unsettling example sentence: "The pharmaceutical company decided it was too expensive to run a proper control group, so they sold human volunteers' future health outcomes on the black market."