Condoms aren't completely safe. A friend of mine was wearing one and got hit by a bus.

Rigor is always appropriate when investing in markets, whatever the ultimate conclusions may be.

First, the only certainty is that there is no certainty. Second, every decision, as a consequence, is a matter of weighing probabilities. Third, despite uncertainty we must decide and we must act. And lastly, we need to judge decisions not only on the results, but on how they were made.

The only certainty is that there is no certainty.

Any individual decisions can be badly thought through, and yet be successful, or exceedingly well thought through, but be unsuccessful, because the recognized possibility of failure in fact occurs. But over time, more thoughtful decision-making will lead to better overall results, and more thoughtful decision-making can be encouraged by evaluating decisions on how well they were made rather than on outcome.

We do not view 2005 to be a clean operating year, and the positives of beating expectations are offset by guidance moving around.

Some people are more certain of everything than I am of anything.