Salve Sodales!
In the interest of making breakthroughs and incorporating new abilities into Hermetic magic, I understand the process of it up until its very final step.
Assuming that the major breakthrough is a success, and the magus has created a new Hermetic Virture, it states very clearly in HoH:TL that these new virtues are teachable to other magi without the crippling restrictions of "Learning supernatural abilities" (subtracting arts from the source quality of the text:
Alright. This is pretty clear cut. I understand this.
What kinda throws me is the second part...
Here's where I'm unsure.
[i]Exempli Gratia: A magus makes a breakthrough, discovering the Folk Witch method of Flight, and makes it a Hermetic virtue with a corresponding Ability "Flight." Eager to start up a Quidditch match (sorry), he creates the summa "Bedknobs and Broomsticks 101: A guide to flight -- Level 3, quality 10 Flight ability summa."
Viola! Any other magus may read and learn this new ability.
Another magus plunders the secrets of the Gruagachan, and makes a breakthrough, making "Cailleach Magic" a new Hermetic Virtue. However, this virtue does not have a corresponding ability.[/i]
How does one "teach" it without knowing how many experience points it takes to "learn" it without resorting to initiation if it can be taught in the same manner?
Is his breakthrough text "Formulaic magic: Fast, Furious, and Fun!" a tractatus that automatically bestows said ability upon a season of reading, or is it something else?
How about having to gain a number of experience points equal to the breakthrough points to gain the virtue?
Exempli Gratia: "Formulaic Magic: Fast, Furious, and Fun! is a Summa of quality 12 that may be read over the course of 4 seasons, generating the 45 experience points needed to gain the virtue "Cailleach Magic?"
I'm lost. Mysteries seems to imply that all virtues MUST be initiated, while True Lineages implies that breakthroughs can be taught like any other ability.
Answers, anyone?