The reality of markets is that they move up or down, driven by a wide range of variables, not all of them predictable.

When they’re up, we tend to think everything is rosy and those companies reaping the benefits can do no wrong (or at least very little wrong). Conversely, when they’re down, we think the world is going to hell in a handbasket, and there’s nothing that can be done right, so best to beware.