On my walk through the neighborhood today I saw this.
I pointed it out to the tall person and suggested the occupant might be a firefighter who needs to be able to leave his home quickly in the event he is called to fight a fire in the neighborhood. The tall person smiled and told me that I had an overactive imagination.
Hmm. I was about to suggest that we wait until the firefighter received an emergency call so we could watch him slide down the tree and prove the tall person wrong but it was a hot day so we walked on.