I've once been told the keys were an arcane ritual called "taking good notes" combined with the Level 5 Bayesjutsu called "Condense your probability mass" and "Test your predictions".

Attempts at piercing the veil of secrecy and/or locating a tutor or manual on these rituals and techniques have proven fruitless to date. Reports of such findings have all turned out to be hoaxes or were never confirmed, potentially as the finders became part of the group which maintains the secrecy.