The reason that I'm an actor, or an artist, is ultimately because I'm trying to paint a self-portrait, and the most complete and beautiful self-portrait that you can. ↗
If a man has money, it is usually a sign, too, that he knows how to take care of it; don't imagine his money is easy to get simply because he has plenty of it. ↗
If each of your time steps is one week long, you are not modeling the stock price terribly well over a one-week time period, because you are saying that there are only two possible outcomes. ↗