Wire Heading a Rat

In a lab setting, scientists hook little things up to the reward center of an animal's brain. They fire electrical signals down into it, constantly stimulating the reward center. The rat is so happy it forgets to eat and doesn't even prowl the cage looking for a rat domestic life partner to spend the rest of its days in the cage with. People who believe that we will never experience happiness are often met with objections from those who think they're wrong.