For much more precise answers to all your questions try asking The Magic Eight Ball.
The magic eight ball as a "divination" tool or predictive instrument compared to the Yi-Ching is like trusting ASR measured specs as high probability of S.Q. compared to acoustical optimization quadruple methods...There is no reason why magic eight ball out of randomness can predict accurately anything...Only faith in randomness as Synchronicities potentials...
On the other one, instead of an icosahedron 20 faces moving at random we have a combinatorial basin of 4096 possibilities deeply commented along a long history... Each hexagrams need many pages of commentary as a synchronicity manifestation for its meaning...
Deep oral wisdom versus a 20 faces dice....
The Yi-ching is the inspiration source for Hermanm Hesse, Glass Bead game, a masterpiece, whose best friend was Richard Wilhem German translator of the Yi-Ching then used by Hesse as a metaphor for the first Computer A.I. in a novel whose depth of thought goes beyond usual S.-F. novella....
Also the Yi-Ching is the mother of Leibnitz binary system and his monadic idea...
It is also the idea behind Terence McKenna novelty waves in history...
China goes back from history into A.I. actualities right now...
Billiard ball vs. Yi-Ching archetypes
It is like measuring the wrong specs with the wrong measuring tools versus using acoustics/psychoacoustics concepts for the measuring process...
Synchonicity use randomness and control it....As consciousness control the cosmos...With musical touch....

