That worked better than I expected. The police joined in and you're happy about being able to follow a direct order.
With the chimps, they set up a positive feedback loop by releasing dopamine into the mesolimbic pathway when they completed an order. When they were given orders they liked, it led to addiction problems.
You just lost your happy, didn't you?
Which means… negative feedback. Yes! Now that I'm unhappy I can be happy again!