  Halfway between the experiment and the focus group, between the quiz and a
game, we have experienced a new format to "focus" on sustainability and the
fundamental laws of thermodynamics and its principles. Concepts as
reversibility, efficiency and entropy, are then "visualized" by the
participants, showing the relations with the economic value, waste, the
energetics budget and raw material costs are explained from a different point
of view, proving the physical limits to the economic growth and the
environmental exploitation.
