That's definitely a well thought through answer.. however, there are many more planets than we thought, so there are many more rolls of the dice that had originally expected. The Improbable Planet does bring some interesting questions of chance to mind, however, I'm not sure that I would make the leap that the author does and suggest that there is a divine hand that was involved. From a statistical point of view, the more rolls you have... the more likely the improbable is, which is what we see every day in the "commonness" of otherwise improbable events (like winning the lottery twice). It is likely that someone somewhere will manage it at some time... despite the fact that is a really low probability event.