What is the definition of Preceding Human Experiments?

Ah, 'preceding human experiments,' a term so chilling it could make Darth Vader blush - it's like saying "the dark side of scientific curiosity." It refers to research studies conducted on humans before we had the luxury (and ethical guidelines) to protect our dignity and sanity.

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Here's an unsettling example sentence using our fancy new term: "The scientists daringly began their most insane human experiments, testing the limits of our sanity and pushing the boundaries of ethics, before the very first human ever agreed to take part." Talk about setting the stage for a thriller!