Ice cream machine measures your sorrow

The product developed by Demitrios Kargotis requires you to answer a few questions posed by the machine when you want some ice cream. It determines the extent of your sadness based on the fluctuations in your voice, and then dispenses ice cream accordingly. The specific operation is described very vaguely, and it's unclear whether the sadder you are, the more ice cream you get, or if it's about different flavors of ice cream. That's the question.