I Ching
The I Ching is best regarded as an elegant system of divination. It is a very broad subject, but mostly today and in general use, the I Ching is a system of divination put into motion by the mechanics of throwing three coins six times. This gives us a hexagram to study in response to our karma of having a situation or milieu we are unclear about, and then seeking a Revelation in the form of the hexagram response.
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Adapted from a post by Sri Kapilnath to the INO mailing list.