What is the definition of Unknown Experiments?

"Unknown experiments are like the wild side of science - they're all those crazy, untested ideas that could either blow your mind or turn you into a walking science fiction novel. But here's a dose of the unsettling side: 'Last week, an unknown experiment revealed that feeding a cat a spoonful of chocolate could trigger a full-blown existential crisis, making them question if their purrs are just purr-fect for comfort or just a sign of impending doom.'"