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Geomantic cast
Geomancy answers a question with sixteen figures, each four rows of one or two dots. You cast four of them — the Mothers — and the eleven that follow are arithmetic rather than chance, every one derived from the two above it.
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The source instructs the practitioner to make points without counting them. It says that the place and method used to make the points do not matter.
Another power there is that doth direct and rule this Lot or Fortune, which is the very soule it selfe of the Projector, when he is carried to this work with some great egresse of his owne desire, for this Art hath a naturall obedience to the soule it selfe, and of necessity hath efficacy and is moved to that which the soule it self desires, and this way is by far more true and pure; neither matters it where or how these points are projected
In plain English What makes the cast answer, in this account, is the mind of the person casting — so the manner of making the marks is left open, and the book says outright that it does not matter where or how they are made.