Forum:Revan and the Rule of Two

As Darth Bane: Path of Destruction tells us, Darth Bane learned the Rule of Two from Darth Revan. My question is: how exactly did Revan follow this concept? We know that he and Malak were certainly not the only two Sith in existence: they had an entire order and empire comprised of dark Force users, all considered "Sith." The impression I got from the book was that Revan was simply saying that the Dark Lord of the Sith should have a single apprentice, but Bane took that principal further by believing that that master and apprentice should be the entire Sith order itself. The other possibility is that Revan had this idea but never put it into practice during his time as the Dark Lord, most likely because he needed an army with which to conquer the Republic. Perhaps after that, once he was the ruler of what had been the Republic, he planned to slaughter all of the Sith, allowing only himself and his apprentice to exist?

I don't know. What does everyone here think?