Originally posted by K-Dog
It does seem kinda strange that two sith, or really just one (Palpatine) could have enough power or influence over the force to clould everything for all Jedi even when he is in a different planet system than them. That's some pretty big universal control there. Or a bunch of PIS, I'm not sure which.
The way sith were trained forced the apprentice to become stronger than the master, and the master to keep learning to try and stay ahead of the apprentice. Therefore, the sith got stronger from one generation to the next due to the Rule of Two. So, by the time you get to palpatine, you have one very powerful sith.