Future Modeling

From where I stand at this moment my future could go any number of ways. For example: I could choose to walk to the left or to the right on the path in front of me. If I go to the left I come to a junction with another path just over the brow of this hill. There I could continue with this path or head off into the woods on the new path. If I choose to head towards the woods there are many new options that will open out in front of me. It can be seen, therefore, there are at this moment in time a large number of ways my life could go. A very large number. I just wonder is anyone has calculated it?