So, I asume I am not the first person to notice that Occult's description implies it is worthless. To whit:
"This skill does not apply to spells, books, and the magic of the Cthulhu Mythos, although occult ideas are often adopted by worshipers of the Great Old Ones."
So, it is a skill that lets you identify anything except anything that might be useful. That, well it seems wierd if only because it works as a perfect Mythos detector. I mean, think about it, you show an Occult expert 3 books, The Practices of The Dark One, The Hammer of Witches and The Book of Going Forth Around Lun