Workshop

Yesterday I had a workshop for a team in a bid Swedish company, Mostly engineers. Most of them had´t been painting before and despite, or maybe, because of that they started to paint right away as if there weren´t any boundaries. How come? Was it because they didn´t have anything to loose as this was´t their profession, or was it just because it was just a game for them and they did´t have to be responsible for the final result?