I wanted to call you wrong, but it appears that I had confused him with someone else - I had thought that Vern Unsworth, who had this "issue" with Elon Musk, was one of the initial divers laying out the guidelines through the cave as he was quoted as "helping the Thai SEALs with mapping out the cave), however, the actual life-risking guideline setup was done not by him but by other British divers - Richard Stanton and John Volanthen.