Everything you bring to a burn comes back with you. Every piece of wood ash, every bottle cap, every strand of fake fur that falls off your costume. MOOP, Matter Out Of Place, is the enemy. The playa gives us the space to build something extraordinary every year, and the only way we keep that permission is by leaving it exactly as we found it. This isn't a guideline. It's a condition of the whole thing existing. Pack it in, pack it out, and leave the land better than you found it.