I have one rule when it comes to investing: think ahead. There’s more to that than “it’s gonna go up!” What’s the primary force moving it up? What change in conditions would warrant a change of opinion? And as always, if things don’t pan out as you think they might, what are you going to do? If you look at the world as a function of past choices, then you can understand the future as a function of present choices. As long as we continue to think the same, in both the philosophical and psychological sense, then we can analyze what has happened and why it’s happened to see what will happen, and why it will happen.