Arcanists and their spells

[Urthdigger]

You cannot assign traits to one class based on the specific details given about a completely different job. That would be like saying that all cats meow and since all other animals don't meow, then they must be dogs.

I won't, however, fight the base line of your argument, since we aren't explicitly told where, exactly, arcanists draw their power from.

A closer example to what I said would be "Meowing is a defining trait of cats. One can thus assume other animals do not meow." Which is a logical assumption.

[gornotck]

Like many assumptions, it's wrong, though.
Forgot, though, that the ink in arcanists' books is made of blood, though. Blood and precious metals.