>>23905066it's doing it to itself
it's a Skinner Box, used for operant conditioning
at the most basic level, you can hook up the reward centre of the rat's brain to an electrode, and have a stimulating current delivered when it pushes the lever, creating sensations of overwhelming feelings of pleasure as strong as any drug
once Mr. Rat figures it out, he will push this lever preferentially over doing anything else at all
if allowed to, he will push the lever until he dies of dehydration
