Strangers on Earth

Today, there are more than 7 billion people in the world. I really don't know how many people have lived on Earth total, but it has to be a big number. Now, let's say that the world has had more than 10 billion people. That number is astronomical! Can you really believe that you are unique in a world where 10 billion people have lived before you? Everything you think, say, or do has been thought, said, or done by someone before. Of course there are geniuses who people claim made innovations in the past, but that was before the number of humans hit 10 billion. Each person can create a personal reality to live in, but in the real reality, we all live in the same world. No one is  a stranger to Earth