Casting lots according to the Holy Scriptures

Without a doubt, it is forbidden by a severe Torah prohibition (it is an act of idolatry). See Rambam, 37:14.
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Asks:
Regarding the prohibition of guessing from the Rambam, 7:11, it is not proven that the Holy Writings prohibit guessing, since all the things he brought are indeed a person’s feelings towards reality, but something like this that is from the Holy Writings (not that the GK calls it that) could be that the Rambam would agree with this.
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Rabbi:
I didn’t understand the argument.