Do you think grimoires are like Ikea instructions?
No, far from it. They’re more like college courses that expect you to be able to read and have basic tools, skills and knowledge.
Great ! knowing that knowledge of magick is relative! absolute knowledge requires direct knowledge and without intermediary so should we trust to our references ?
I would say there’s no such thing as absolute knowledge.
Every person is perceiving the universe through their own unique senses, there is no way to really prove that every person perceive the same things the same way, thus knowledge is personal and subjective.
The best we an hope for is enough of an overlap that we make sense to each other.
When this doesn’t happen, that’s when life gets difficult, people start to be called insane, or maybe just high on drugs, by those who are in agreement vs one who is not.