>>749
>Can they be dipensed with once you have a working relationship with a spirit …
Other texts have spoken about that, some even going so far to explain that you've essentially formed a bond or absorbed a 'portion' of the spirit or its 'essence' or what-have-you. Though, I'm pretty sure this is dependent on the nature of the experiment itself.
I think though, the part of the circle might end up being taken up by a part of your own psyche in some ways, kind of following that 'bond with X'. Maybe a kind of second nature, or a combination of the two, but now it's just purely wondering.
>>750
You'd think at first, but following the pythagorean roots of certain forms, an understanding of the shapes, and angles especially, might become necessary, at least for a time, again, perhaps until it comes to be second nature.
Not to mention the need for understanding the names, the languages of the names, the meanings of shapes of glyphs and combinations thereof, the numerological etcetera which goes along with that, if applicable, or at least in the cases of generic "arabic", hebrew, greek, cyrillic, to some lesser extent latin, the supposed original aramaic, and all the inbetweens of various cultures, some of which still exist to this day. All things we don't bother with anymore, but it still prevails in the background.