It's actually a mix. They need to disappoint the user for the right amount of time, to then please it at the right moment and dose. This maximizes the dopamine

It's actually a mix. They need to disappoint the user for the right amount of time, to then please it at the right moment and dose. This maximizes the dopamine release and increases addictiveness. When you find good content depends on when the algo judges you're already primed to a colorful dopamine intake.