Dream of

My son and I were having trouble communicating. He was a little boy and wouldn't talk to me. I couldn't find a way to talk to him and so I said " it's like this' and I showed him a big boulder in the air, and 'then this' and I showed him a smaller boulder in the air beside the first one. The I hesitated and said 'then there's this!' And there was a huge boulder in the air above the other two. Later my son began to cry and I was able to put my arm around him. What are those boulders? Big coarlsely rounded off grey rocks hanging on nothing?