The Other must behave as his level prescribes, until the power becomes part of him. Until the potion is digested, the bearer is vulnerable: the power is already there, but there is no control over it yet.
The roles of the path require working with facts: the Reader collects what has been read, the Detective conducts investigations and unravels others' lies, the Erudite and the Prophet move from collected information to conclusions that no one has yet made.
The method long remained the knowledge of a few: the church hierarchies were in no hurry to reveal it, and many Others ascended blindly, paying for it with their sanity.