The too-soft mattress in London made the artist's back, which had been used to sleeping on a hard mattress, extremely sore, so he bought a sleeping bag and prepared to sleep on the floor. It was said that this would make the soreness improve.

As he slept in the sleeping bag on the floor of his room, he realised that there were many homeless people in Broadway, which he passed every day on his way home, sleeping on the hard concrete road in exactly the same way, and that he seemed to be doing something similar in a way. So he decided to use the materials they often use to build temporary shelters, made a model of himself in a sleeping bag, and put the artist's surrogate into a telephone booth - a stronghold often occupied by homeless people, and sometimes a place to take a piss. The artist tries to make this surrogate experience their lives instead of his own.