Very interesting and obviously a hot topic.
Its just very coincidential that the 1st 2 flushesd produced the hard, red marbled stones and all subsequent flushes (20+) did not. Maybe the stones are from bile infection, maybe something we do not know about. Maybe the magnesium relaxes the bile ducts (or liver ducts) so much that they can perform stretchy miracles. Its a lot of maybes here but im very unsure based on lots of peoples conflicting ideas, all people that have wisdom in some or many areas.
I do know one thing for sure, I always feel great after a flush and believe that they have greatly helped my health.