Reading tea-leaves to describe tall dark strangers and journeys over water....foretelling how a battle will go by studying the fresh entrails of a newly slaughtered beast...studying the star formations to advise when best to buy a lottery ticket....all work for somebody somewhere. No explanation is needed.
This topic strayed ever so wildly off course...but reading back it seems that no-one has any first hand or verifiable evidence other than 2nd or 3rd hand anecdotal that stones(and/or trees) fling people across distances further than they can jump, except a dowser who had an epiphany about anti-gravity whilst being flung (unwitnessed) by a stone...which is why we got onto the tack of mystic powers and earth energies...whether we believe it or not....I don't, others do and others yet don't give a toss(NPI).