The exact definition of Mastery is.... ?
Yes if I can complete the PE & IM , but how proficient should I be at the PE before I am comfortable to move on ? No Shaking yes, but almost effortless ? Should I feel almost bored by the end of set 5 because it is so easy ? I realize that might take more time to progress, but wouldn't it be a huge asset as I progress through the more advanced progressions ?