Imagine for a moment that you are in fact God. You have all this power to create but you are alone, you are the only being in existence. To keep yourself sane, you create a universe of thinking beings. Since you control time, you are able to put yourself into the mind of each of these beings separately so in your ‘world’ you are interacting with yourself playing many different roles : animals, people, plants. You also make it so that you’re not aware of your charade. All you know is that you are just one being in the universe. You believe that the others are actually ‘others’. But one day, today, you wonder if in fact that’s not the case. Imagine how crushingly depressed you would feel when you realized that you were so alone.