How many successes does very difficult require?
The core rulebook only states 3 levels of difficulty: difficult/normal, extremely difficult, almost impossible.
However, in OFtM, on p9, it says that very difficult requires 3 successes. Yet at the same time, in various parts of the chapter, almost impossible is mentioned (even if one were to discount the mention under extended trouble).
Could there have been a typo? That on p9, it had meant to say almost impossible instead?