The children in our house only have a passing understanding of the concept of a sofa. What we see as something to sit on, they see as something to jump on, push off of, hide behind (or in). It’s getting inherently more dangerous as the kids get older too, we have one sofa in the sitting room that isn’t up against a wall and this now tilts alarming up on two legs when a child hurls themselves on to the sofa. They haven’t even quite got the hang of sitting on a sofa either; pressing themselves right up tight against any available adult, despite the surfeit of seating space available. I’m often chased around the sofas as I move places to ensure I have some elbow room.