The invoking and banishing pentagrams of spirit
I've been studying the invoking and banishing pentagrams of the elements. One of the first things I noticed is that the invoking and banishing pentagrams of air and water are the same but reversed. This seems to me to be due to the desire for the invoking and banishing pentagrams of spirit not to overlap with any of the "lesser elements".
My question then is this: why do the invoking and banishing pentagrams of spirit not use the point of spirit as a direct starting point, as is the case with the lesser elements. Any insight is greatly appreciated.