[Star Wars] How effective was the Rule of Two at preserving or increasing the knowledge/power of the Sith?
How well did the Rule of Two work? Was Palpatine more powerful than his predecessors? Was knowledge lost? Like surely with only two individual Sith, there is a huge risk that a Master could die prematurely.
Indeed whats stopping an Apprentice shanking the Master in his sleep before hes fully trained/at full power?