A treehouse must have an evacuation chute. Let me just repeat that, please. A treehouse MUST have an evacuation chute. Not necessarily because you need to protect yourself from all the danger that may come by you while you are up there exploring among the canopy, but because it is so much FUN!! Does anybody still remember that word or has it gone extinct? Just imagine, every time you need to get back to the headquarters, aka "HQ" or even the "main wing of the house" (Mum liked this one!) it's one quick slide down a pole or down a rope ladder. The velocity of a body sliding down the chute determines the "transparency index" that works upon your body as you go down the chute, you see, the faster you go, the more "transparent" you will become and your "enemies" will struggle to see you, let alone catch you.