In the silence of the kitchen, in the twilight of the morning, an object rests, placed in the door of a cool, white cupboard. This object, a container made of cardboard and plastic, has fulfilled its original purpose and transferred its contents to the user. What was once filled with a liquid substance, a food rich in nutrients, is now just a shell, an empty form without weight. Physically, this object is now mainly a volume of air, enclosed within its walls, with minimal mass compared to its original state. The molecules of the former contents are gone, replaced by the gas molecules of the air that fill the empty space inside. The thermodynamic properties have changed; where there was previously a cold, moist substance, there is now a dry void, which assumes the temperature of the environment without further heat exchange.